Sinusitis | |
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Other names | Sinus infection, rhinosinusitis |
An illustration showing the difference between healthy sinuses and diseased sinuses | |
Specialty | Otorhinolaryngology |
Symptoms | nasal discharge, nasal blockage, facial pain, reduction or loss of smell, fever [1] [2] |
Causes | Infection (bacterial, fungal, viral), allergies, air pollution, structural problems in the nose [3] |
Risk factors | Asthma, cystic fibrosis, poor immune function [1] |
Diagnostic method | Usually based on symptoms |
Differential diagnosis | common cold, rhinitis, upper respiratory infection, temporomandibular joint disorder, tension headache, vascular headache, dental infection |
Prevention | handwashing, vaccinations, avoiding smoking [3] |
Treatment | Pain medications, nasal steroids, nasal irrigation, antibiotic [1] [4] |
Frequency | 10–30% each year (developed world) [1] [5] |
Sinusitis, also known as rhinosinusitis, is an inflammation of the mucous membranes that line the sinuses resulting in symptoms that may include production of thick nasal mucus, nasal congestion, facial congestion, facial pain, facial pressure, loss of smell, or fever. [6] [7]
Sinusitis is a condition that affects both children and adults. It is caused by a combination of environmental and a person's individual health factors. [8] It can occur in individuals with allergies, exposure to environmental irritants, structural abnormalities of the nasal cavity and sinuses and poor immune function. [9] Most cases are caused by a viral infection. [3] Recurrent episodes are more likely in persons with asthma, cystic fibrosis, and immunodeficiency. [10]
The diagnosis of sinusitis is based on the symptoms and their duration along with signs of disease identified by endoscopic and/or radiologic criteria. [11] Sinusitis is classified into acute sinusitis and chronic sinusitis. In acute sinusitis, symptoms last for less than 4 weeks. In chronic sinusitis symptoms must be present for at least 12 weeks. [12] In the initial evaluation of sinusitis an Otolaryngologist, also known as an ear, nose and throat (ENT) doctor, may confirm sinusitis using nasal endoscopy. [11] Diagnostic imaging is not usually needed in acute stage unless complications are suspected. [13] In chronic cases, confirmatory testing is recommended by use of computed tomography. [13]
Prevention of sinusitis focuses on regular hand washing, staying up-to date on vaccinations, and avoiding smoking. [14] Pain killers such as naproxen, nasal steroids, and nasal irrigation may be used to help with symptoms. [15] [16] Recommended initial treatment for acute sinusitis is watchful waiting. [15] If symptoms do not improve in 7–10 days or worsen, then an antibiotic may be implemented or changed. [15] In those in whom antibiotics are indicated, either amoxicillin or amoxicillin/clavulanate is recommended first line, with amoxicillin/clavulanate being superior to amoxicillin alone but with more side effects. [17] [15] Surgery may be recommended in those with chronic disease who have failed medical management. [18]
Sinusitis is a common condition. [19] It affects between about 10 and 30 percent of people each year in the United States and Europe. [19] [5] The management of sinusitis in the United States results in more than US$11 billion in costs. [19]
Acute sinusitis can present as facial pain and tenderness that may worsen with staining or bending over, headache, cough, bad breath, nasal congestion, ear pain, ear pressure or nasal discharge that is usually green in color, and may contain pus or blood. [20] Dental pain can also occur. A way to distinguish between toothache and sinusitis is that sinusitis-related pain is usually worsened by tilting the head forward or performing the Valsalva maneuver. [21]
Chronic sinusitis presents with more subtle symptoms of nasal obstruction, with less fever and pain complaints. [22] Symptoms include facial pain, headache, night-time coughing, an increase in previously minor or controlled asthma symptoms, general malaise, thick green or yellow nasal discharge, feeling of facial fullness or tightness that may worsen when bending over, dizziness, aching teeth, and bad breath. [23] Often, chronic sinusitis can lead to anosmia, the loss of the sense of smell. [23]
A 2005 review suggested that most "sinus headaches" are migraines. [24] The confusion occurs in part because migraine involves activation of the trigeminal nerves, which innervate both the sinus region and the meninges surrounding the brain. As a result, accurately determining the site from which the pain originates is difficult. People with migraines do not typically have the thick nasal discharge that is a common symptom of a sinus infection. [25]
The four paired paranasal sinuses are the frontal, ethmoidal, maxillary, and sphenoidal sinuses. The ethmoidal sinuses are further subdivided into anterior and posterior ethmoid sinuses, the division of which is defined as the basal lamella of the middle nasal concha. In addition to the severity of disease, discussed below, sinusitis can be classified by the sinus cavity it affects:
Stage | Description |
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I | Preseptal cellulitis |
II | Orbital cellulitis |
III | Subperiosteal abscess |
IV | Orbital abscess |
V | Cavernous sinus septic thrombosis |
Complications are thought to be rare (1 case per 10,000). [28] Infectious complications of acute bacterial sinusitis include eye, brain and bone complications. [29]
The Chandler Classification is used to group orbital complications into five stages according to their severity. [30] Stage I, known as preseptal cellulitis, occurs when an infection develops in front to the orbital septum. [31] It is thought to result from restricted venous drainage from the sinuses and affects the soft tissue of the eyelids and other superficial structures. [31] Stage II, known as orbital cellulitis, occurs when infection develops behind the orbital septum and affects the orbits. [31] This can result in impaired eye movement, protrusion of the eye, and eye swelling. [31] Stage III, known as subperiosteal abscess, occurs when pus collects between walls of the orbit and the surrounding periosteal structures. [31] This can result in impaired eye movement and acuity. [31] Stage IV, known as orbital abscess, occurs when an abscess forms within the orbital tissue. [31] This can result in severe vision impairment. [31] Stage V, known as cavernous sinus thrombosis, is considered an intracranial complication. It can occur as bacterial spread progresses, triggering blood clots that become trapped within the cavernous sinus. [32] This can result in previously described symptoms within the opposite eye and in severe cases, meningitis. [31]
The close proximity of the sinuses to the brain makes brain infections one of the most dangerous complication of acute bacterial sinusitis, especially when the frontal and sphenoid sinuses are involved. These infections can result from invasion of anaerobic bacteria through the bones or blood vessels. Abscesses, meningitis, and other life-threatening conditions may occur. In rare cases, mild personality changes, headache, altered consciousness, visual problems, seizures, coma, and even death may occur. [33]
A rare complication of acute sinusitis is a bone infection, known as osteomyelitis, which affects the frontal and other facial bones. [34] Specifically, the combination of frontal sinusitis, osteomyelitis and subperiosteal abscess formation is referred to as Pott's puffy tumor. [35] [34]
Other complications
When an infection originating from a tooth or dental procedure affects the maxillary sinus it can lead to odontogenic sinusitis (ODS). [36] Odontogenic sinusitis can often spread to nearby sinuses including the ethmoid, frontal, sphenoid sinuses, and the contralateral nasal cavity. [37] In rare instances, these infections may spread to the orbit, leading to orbital cellulitis.
Acute sinusitis is usually precipitated by an earlier upper respiratory tract infection, generally of viral origin, mostly caused by rhinoviruses (with RVA and RVC giving more severe infection than RVB), coronaviruses, and influenza viruses, others caused by adenoviruses, human parainfluenza viruses, human respiratory syncytial virus, enteroviruses other than rhinoviruses, and metapneumovirus. If the infection is of bacterial origin, the most common three causative agents are Streptococcus pneumoniae (38%), Haemophilus influenzae (36%), and Moraxella catarrhalis (16%). [38] [39] Until recently, H. influenzae was the most common bacterial agent to cause sinus infections. However, introduction of the H. influenzae type B (Hib) vaccine has dramatically decreased these infections and now non-typable H. influenzae (NTHI) is predominantly seen in clinics. Other sinusitis-causing bacterial pathogens include S. aureus and other streptococci species, anaerobic bacteria and, less commonly, Gram-negative bacteria. Viral sinusitis typically lasts for 7 to 10 days. [28]
Acute episodes of sinusitis can also result from fungal invasion. These infections are typically seen in people with diabetes or other immune deficiencies (such as AIDS or transplant on immunosuppressive antirejection medications) and can be life-threatening. In type I diabetics, ketoacidosis can be associated with sinusitis due to mucormycosis. [40]
By definition, chronic sinusitis lasts longer than 12 weeks and can be caused by many different diseases that share chronic inflammation of the sinuses as a common symptom. It is subdivided into cases with and without polyps. When polyps are present, the condition is called chronic hyperplastic sinusitis; however, the causes are poorly understood. [28] It may develop with anatomic derangements, including deviation of the nasal septum and the presence of concha bullosa (pneumatization of the middle concha) that inhibit the outflow of mucus, or with allergic rhinitis, asthma, cystic fibrosis, and dental infections. [41]
Chronic rhinosinusitis represents a multifactorial inflammatory disorder, rather than simply a persistent bacterial infection. [28] The medical management of chronic rhinosinusitis is now focused upon controlling the inflammation that predisposes people to obstruction, reducing the incidence of infections. [42] Surgery may be needed if medications are not working. [42]
Attempts have been made to provide a more consistent nomenclature for subtypes of chronic sinusitis. The presence of eosinophils in the mucous lining of the nose and paranasal sinuses has been demonstrated for many people, and this has been termed eosinophilic mucin rhinosinusitis (EMRS). Cases of EMRS may be related to an allergic response, but allergy is not often documented, resulting in further subcategorization into allergic and nonallergic EMRS. [43]
A more recent, and still debated, development in chronic sinusitis is the role that fungi play in this disease. [44] Whether fungi are a definite factor in the development of chronic sinusitis remains unclear, and if they are, what is the difference between those who develop the disease and those who remain free of symptoms. Trials of antifungal treatments have had mixed results. [45]
Recent theories of sinusitis indicate that it often occurs as part of a spectrum of diseases that affect the respiratory tract (i.e., the "one airway" theory) and is often linked to asthma. [46] [47]
Both smoking and secondhand smoke are associated with chronic rhinosinusitis. [48]
Exposure to fine particulate matter (PM2.5), which consists of particles less than 2.5 micrometers in diameter, has been associated with an increased risk of developing rhinosinusitis. [49] [50] PM2.5 particles can penetrate deep into the respiratory tract, reaching the nasal and sinus mucosa, leading to inflammation and impaired mucociliary clearance. [51] Individuals living in areas with higher concentrations of PM2.5 experience increased symptoms and exacerbations of chronic rhinosinusitis. [52] The fine particles cause oxidative stress and inflammation, contributing to the pathogenesis of rhinosinusitis. [53]
While both PM10 (particles less than 10 micrometers) and PM2.5 can affect the respiratory system, PM2.5 particles are more closely associated with rhinosinusitis due to their ability to reach deeper into the sinus cavities. [54] These smaller particles bypass the nasal hair filtering mechanism and deposit in the mucous membranes of the sinuses, leading to greater inflammatory responses. [55]
The World Health Organization (WHO) recommends that annual mean concentrations of PM2.5 should not exceed 5 µg/m³, and 24-hour mean exposures should not exceed 15 µg/m³ to minimize health risks. [56] Exposure to concentrations above these thresholds has been linked to an increased incidence and severity of rhinosinusitis and other respiratory diseases. [57]
Other diseases such as cystic fibrosis and granulomatosis with polyangiitis can also cause chronic sinusitis. [58]
Maxillary sinusitis may also develop from problems with the teeth, and these cases were calculated to be about 40% in one study and 50% in another. [59] The cause of this situation is usually a periapical or periodontal infection of a maxillary posterior tooth, where the inflammatory exudate has eroded through the bone superiorly to drain into the maxillary sinus. [59]
An estimated 0.5 to 2.0% of viral rhinosinusitis (VRS) will develop into bacterial infections in adults and 5 to 10% in children. [38]
Chronic rhinosinusitis is multifactorial process hypothesized to be caused by inflammatory processes driven by dysfunction between local host and environmental interactions. [60] It is divided into two phenotypes that depend on the presence or absence of nasal polyps. [61] Chronic rhinosinusitis with nasal polyps and chronic rhinosinusitis without nasal polyps are thought to have two different inflammatory pathways, with the latter form driven by a Th1 response and the former driven by a Th2 response. [62] Both pathways result in an increase in inflammatory molecules (cytokines). The Th1 response is characterized by secretion of interferon gamma. [61] The Th2 response is characterized by secretion of interleukin-4 receptor, interleukin 5, and interleukin 13. [61] Both forms of chronic rhinosinusitis are considered to be highly heterogenous, each with the ability to demonstrate three inflammatory endotypes, the third being a Th17 response. [61]
Sinusitis (or rhinosinusitis) is defined as an inflammation of the mucous membrane that lines the paranasal sinuses and is classified chronologically into several categories: [63]
Roughly 90% of adults have had sinusitis at some point in their lives. [64]
Health care providers distinguish bacterial and viral sinusitis by watchful waiting. [1] If a person has had sinusitis for fewer than 10 days without the symptoms becoming worse, then the infection is presumed to be viral. [1] When symptoms last more than 10 days or get worse in that time, then the infection is considered bacterial sinusitis. [65] Pain in the teeth and bad breath are also more indicative of bacterial disease. [66]
Imaging by either X-ray, CT or MRI is generally not recommended unless complications develop. [65] Pain caused by sinusitis is sometimes confused for pain caused by pulpitis (toothache) of the maxillary teeth, and vice versa. Classically, the increased pain when tilting the head forwards separates sinusitis from pulpitis.[ citation needed ]
For cases of maxillary sinusitis, limited field CBCT imaging, as compared to periapical radiographs, improves the ability to detect the teeth as the sources for sinusitis. A coronal CT picture may also be useful. [59]
For sinusitis lasting more than 12 weeks, a CT scan is recommended. [65] On a CT scan, acute sinus secretions have a radiodensity of 10 to 25 Hounsfield units (HU), but in a more chronic state they become more viscous, with a radiodensity of 30 to 60 HU. [67]
Nasal endoscopy and clinical symptoms are also used to make a positive diagnosis. [28] A tissue sample for histology and cultures can also be collected and tested. [68] Nasal endoscopy involves inserting a flexible fiber-optic tube with a light and camera at its tip into the nose to examine the nasal passages and sinuses.
Sinus infections, if they result in tooth pain, usually present with pain involving more than one of the upper teeth, whereas a toothache usually involves a single tooth. Dental examination and appropriate radiography aid in ruling out pain arises from a tooth. [69]
Treatment | Indication | Rationale |
---|---|---|
Time | Viral and some bacterial sinusitis | Sinusitis is usually caused by a virus which is not affected by antibiotics. [70] |
Antibiotics | Bacterial sinusitis | Cases accompanied by extreme pain, skin infection, or which last a long time may be caused by bacteria. [70] |
Nasal irrigation | Nasal congestion | Can provide relief by helping decongest. [70] |
Drink liquids | Thick phlegm | Remaining hydrated loosens mucus. [70] |
Antihistamines | Concern with allergies | Antihistamines do not relieve typical sinusitis or cold symptoms much; this treatment is not needed in most cases. [70] |
Nasal spray | Desire for temporary relief | Tentative evidence that it helps symptoms. [4] Does not treat cause. Not recommended for more than three days' use. [70] |
Recommended treatments for most cases of sinusitis include rest and drinking enough water to thin the mucus. [72] Antibiotics are not recommended for most cases. [72] [73]
Breathing low-temperature steam such as from a hot shower or gargling can relieve symptoms. [72] [74] There is tentative evidence for nasal irrigation in acute sinusitis, for example during upper respiratory infections. [4] Decongestant nasal sprays containing oxymetazoline may provide relief, but these medications should not be used for more than the recommended period. Longer use may cause rebound sinusitis. [75] It is unclear if nasal irrigation, antihistamines, or decongestants work in children with acute sinusitis. [76] There is no clear evidence that plant extracts such as Cyclamen europaeum are effective as an intranasal wash to treat acute sinusitis. [77] Evidence is inconclusive on whether anti-fungal treatments improve symptoms or quality of life. [78]
Most sinusitis cases are caused by viruses and resolve without antibiotics. [28] However, if symptoms do not resolve within 10 days, either amoxicillin or amoxicillin/clavulanate are reasonable antibiotics for first treatment with amoxicillin/clavulanate being slightly superior to amoxicillin alone but with more side effects. [79] [28] A 2018 Cochrane review, however, found no evidence that people with symptoms lasting seven days or more before consulting their physician are more likely to have bacterial sinusitis as one study found that about 80% of patients have symptoms lasting more than 7 days and another about 70%. [80] Antibiotics are specifically not recommended in those with mild / moderate disease during the first week of infection due to risk of adverse effects, antibiotic resistance, and cost. [81]
Fluoroquinolones, and a newer macrolide antibiotic such as clarithromycin or a tetracycline like doxycycline, are used in those who have severe allergies to penicillins. [82] Because of increasing resistance to amoxicillin the 2012 guideline of the Infectious Diseases Society of America recommends amoxicillin-clavulanate as the initial treatment of choice for bacterial sinusitis. [83] The guidelines also recommend against other commonly used antibiotics, including azithromycin, clarithromycin, and trimethoprim/sulfamethoxazole, because of growing antibiotic resistance. The FDA recommends against the use of fluoroquinolones when other options are available due to higher risks of serious side effects. [84]
A short-course (3–7 days) of antibiotics seems to be just as effective as the typical longer-course (10–14 days) of antibiotics for those with clinically diagnosed acute bacterial sinusitis without any other severe disease or complicating factors. [85] The IDSA guideline suggest five to seven days of antibiotics is long enough to treat a bacterial infection without encouraging resistance. The guidelines still recommend children receive antibiotic treatment for ten days to two weeks. [83]
For unconfirmed acute sinusitis, nasal sprays using corticosteroids have not been found to be better than a placebo either alone or in combination with antibiotics. [86] For cases confirmed by radiology or nasal endoscopy, treatment with intranasal corticosteroids alone or in combination with antibiotics is supported. [87] The benefit, however, is small. [88]
For confirmed chronic rhinosinusitis, there is limited evidence that intranasal steroids improve symptoms and insufficient evidence that one type of steroid is more effective. [89] [90]
There is only limited evidence to support short treatment with corticosteroids by mouth for chronic rhinosinusitis with nasal polyps. [91] [92] [93] There is limited evidence to support corticosteroids by mouth in combination with antibiotics for acute sinusitis; it has only short-term effect improving the symptoms. [94] [95]
For sinusitis of dental origin, treatment focuses on removing the infection and preventing reinfection, by removal of the microorganisms, their byproducts, and pulpal debris from the infected root canal. [59] Systemic antibiotics are ineffective as a definitive solution, but may afford temporary relief of symptoms by improving sinus clearing, and may be appropriate for rapidly spreading infections, but debridement and disinfection of the root canal system at the same time is necessary. Treatment options include non-surgical root canal treatment, periradicular surgery, tooth replantation, or extraction of the infected tooth. [59]
For chronic or recurring sinusitis, referral to an otolaryngologist may be indicated, and treatment options may include nasal surgery. Surgery should only be considered for those people who do not benefit with medication or have non-invasive fungal sinusitis [96] [ unreliable medical source? ]. [92] [97] It is unclear how benefits of surgery compare to medical treatments in those with nasal polyps as this has been poorly studied. [98] [99]
A number of surgical approaches can be used to access the sinuses and these have generally shifted from external/extranasal approaches to intranasal endoscopic ones. The benefit of functional endoscopic sinus surgery (FESS) is its ability to allow for a more targeted approach to the affected sinuses, reducing tissue disruption, and minimizing post-operative complications. [100] However, if a traditional FESS with Messerklinger technique is followed the success rate will be as low as 30%, 70% of the patients tend to have recurrence within 3 years. [101] [ unreliable medical source? ] On the other hand with use of TFSE technique along with navigation system, debriders and balloon sinuplasty or EBS can give a success rate of over 99.9%. [101] [ unreliable medical source? ] The use of drug eluting stents such as propel mometasone furoate implant may help in recovery after surgery. [102]
Another recently developed treatment is balloon sinuplasty. This method, similar to balloon angioplasty used to "unclog" arteries of the heart, utilizes balloons in an attempt to expand the openings of the sinuses in a less invasive manner. [42] The effectiveness of the functional endoscopic balloon dilation approach compared to conventional FESS is not known. [42]
Histopathology of sinonasal contents removed from surgery can be diagnostically valuable:
A study has shown that patients given spray formulation of 0.73 mg of Tremacamra (a soluble intercellular adhesion molecule 1 [ICAM-1] receptor) reduced the severity of illness. [39]
A 2018 review has found that without the use of antibiotics, about 46% were cured after one week and 64% after two weeks. [80]
Sinusitis is a common condition, with between 24 and 31 million cases occurring in the United States annually. [105] [106] Chronic sinusitis affects approximately 12.5% of people. [48]
Based on recent theories on the role that fungi may play in the development of chronic sinusitis, antifungal treatments have been used, on a trial basis. These trials have had mixed results. [28]
Otitis media is a group of inflammatory diseases of the middle ear. One of the two main types is acute otitis media (AOM), an infection of rapid onset that usually presents with ear pain. In young children this may result in pulling at the ear, increased crying, and poor sleep. Decreased eating and a fever may also be present. The other main type is otitis media with effusion (OME), typically not associated with symptoms, although occasionally a feeling of fullness is described; it is defined as the presence of non-infectious fluid in the middle ear which may persist for weeks or months often after an episode of acute otitis media. Chronic suppurative otitis media (CSOM) is middle ear inflammation that results in a perforated tympanic membrane with discharge from the ear for more than six weeks. It may be a complication of acute otitis media. Pain is rarely present. All three types of otitis media may be associated with hearing loss. If children with hearing loss due to OME do not learn sign language, it may affect their ability to learn.
An upper respiratory tract infection (URTI) is an illness caused by an acute infection, which involves the upper respiratory tract, including the nose, sinuses, pharynx, larynx or trachea. This commonly includes nasal obstruction, sore throat, tonsillitis, pharyngitis, laryngitis, sinusitis, otitis media, and the common cold. Most infections are viral in nature, and in other instances, the cause is bacterial. URTIs can also be fungal or helminthic in origin, but these are less common.
Nasal polyps are noncancerous growths within the nose or sinuses. Symptoms include trouble breathing through the nose, loss of smell, decreased taste, post nasal drip, and a runny nose. The growths are sac-like, movable, and nontender, though face pain may occasionally occur. They typically occur in both nostrils in those who are affected. Complications may include sinusitis and broadening of the nose.
Nasal irrigation is a personal hygiene practice in which the nasal cavity is washed to flush out mucus and debris from the nose and sinuses, in order to enhance nasal breathing. Nasal irrigation can also refer to the use of saline nasal spray or nebulizers to moisten the mucous membranes.
Post-nasal drip (PND), also known as upper airway cough syndrome (UACS), occurs when excessive mucus is produced by the nasal mucosa. The excess mucus accumulates in the back of the nose, and eventually in the throat once it drips down the back of the throat. It can be caused by rhinitis, sinusitis, gastroesophageal reflux disease (GERD), or by a disorder of swallowing. Other causes can be allergy, cold, flu, and side effects from medications.
Rhinorrhea, also spelled rhinorrhoea or rhinorrhœa, or informally runny nose is the free discharge of a thin mucus fluid from the nose; it is a common condition. It is a common symptom of allergies or certain viral infections, such as the common cold or COVID-19. It can be a side effect of crying, exposure to cold temperatures, cocaine abuse, or drug withdrawal, such as from methadone or other opioids. Treatment for rhinorrhea may be aimed at reducing symptoms or treating underlying causes. Rhinorrhea usually resolves without intervention, but may require treatment by a doctor if symptoms last more than 10 days or if symptoms are the result of foreign bodies in the nose.
The pyramid-shaped maxillary sinus is the largest of the paranasal sinuses, located in the maxilla. It drains into the middle meatus of the nose through the semilunar hiatus. It is located to the side of the nasal cavity, and below the orbit.
Balloon sinuplasty is a procedure that ear, nose and throat surgeons may use for the treatment of blocked sinuses. Patients diagnosed with sinusitis but not responding to medications may be candidates for sinus surgery. Balloon technology was initially cleared by the U.S. Food and Drug Administration in 2005 and is an endoscopic, catheter-based system for chronic sinusitis. It uses a balloon over a wire catheter to dilate sinus passageways. The balloon is inflated with the goal of dilating the sinus openings, widening the walls of the sinus passageway and restoring normal drainage.
Functional endoscopic sinus surgery (FESS) is a procedure that is used to treat sinusitis and other conditions that affect the sinuses. Sinusitis is an inflammation of the sinuses that can cause symptoms such as congestion, headaches, and difficulty breathing through the nose.
Rhinosinusitis is a simultaneous infection of the nasal mucosa (rhinitis) and an infection of the mucosa of the paranasal sinuses (sinusitis). A distinction is made between acute rhinosinusitis and chronic rhinosinusitis.
A sinus is a sac or cavity in any organ or tissue, or an abnormal cavity or passage. In common usage, "sinus" usually refers to the paranasal sinuses, which are air cavities in the cranial bones, especially those near the nose and connecting to it. Most individuals have four paired cavities located in the cranial bone or skull.
ELOM-080 is the active ingredient of the herbal medicine named GeloMyrtol forte. The acronym ELOM stands for the oils from Eucalyptus, Lemon, (Sweet) Orange and Myrtle that it contains.
Antral lavage is a largely obsolete surgical procedure in which a cannula is inserted into the maxillary sinus via the inferior meatus to allow irrigation and drainage of the sinus. It is also called proof puncture, as the presence of an infection can be proven during the procedure. Upon presence of infection, it can be considered as therapeutic puncture. Often, multiple repeated lavages are subsequently required to allow for full washout of infection.
Nonallergic rhinitis is rhinitis—inflammation of the inner part of the nose—not caused by an allergy. Nonallergic rhinitis displays symptoms including chronic sneezing or having a congested, drippy nose, without an identified allergic reaction with allergy testing being normal. Other common terms for nonallergic rhinitis are vasomotor rhinitis and perennial rhinitis. The prevalence of nonallergic rhinitis in otolaryngology is 40%. Allergic rhinitis is more common than nonallergic rhinitis; however, both conditions have similar presentation, manifestation and treatment. Nasal itching and paroxysmal sneezing are usually associated with nonallergic rhinitis rather than allergic rhinitis. Other symptoms that are more specific to non-allergic rhinitis include ear plugging or discomfort with eustachian tube dysfunction, headaches, sinus pressure, and muffled hearing. Common triggers for non-allergic rhinitis include irritants such as tobacco smoke, cleaning agents, or abrupt changes in ambient temperature.
Fungal sinusitis or fungal rhinosinusitis is the inflammation of the lining mucosa of the paranasal sinuses due to a fungal infection. It occurs in people with reduced immunity. The maxillary sinus is the most commonly involved. Fungi responsible for fungal sinusitis are Aspergillus fumigatus (90%), Aspergillus flavus, and Aspergillus niger. Fungal sinusitis occurs most commonly in middle-aged populations. Diabetes mellitus is the most common risk factor involved.
An oroantral fistula (OAF) is an epithelialized oroantral communication (OAC), which refers to an abnormal connection between the oral cavity and the antrum. The creation of an OAC is most commonly due to the extraction of a maxillary tooth (typically a maxillary first molar) which is closely related to the antral floor. A small OAC up to 5 millimeters may heal spontaneously, but a larger OAC would require surgical closure to prevent the development of a persistent OAF and chronic sinusitis.
Nasal surgery is a medical procedure designed to treat various conditions that cause nasal blockages in the upper respiratory tract, for example nasal polyps, inferior turbinate hypertrophy, and chronic rhinosinusitis. It encompasses several types of techniques, including rhinoplasty, septoplasty, sinus surgery, and turbinoplasty, each with its respective postoperative treatments. Furthermore, nasal surgery is also conducted for cosmetic purposes. While there are potential risks and complications associated, the advancement of medical instruments and enhanced surgical skills have helped mitigate them.
Odontogenic sinusitis is a type of sinusitis, specifically caused by dental infections or procedures. Comprising approximately 10-12% of all chronic sinusitis cases, this condition primarily affects the maxillary sinus, which is in close proximity to the upper teeth.
David William Kennedy is an American academician, surgeon, and otolaryngologist. He is currently serving as an emeritus professor at the University of Pennsylvania.
Incidence of acute sinusitis almost always set in following the appearance of a cold for several days at a stretch in the person to the point that all the profuse nasal discharge turns a distinct yellow or a dark green color, or perhaps very thick, and foul-smelling in some cases.[ unreliable medical source? ]
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