Stye | |
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Other names | Sty, hordeolum [1] |
An external stye on the upper eyelid | |
Pronunciation |
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Specialty | Ophthalmology, optometry |
Symptoms | Red tender bump at the edge of the eyelid [1] |
Usual onset | Any age [2] |
Duration | Few days or weeks [3] |
Causes | bacterial infection by Staphylococcus aureus [3] |
Differential diagnosis | Chalazion [4] |
Treatment | Warm compresses, antibiotic eye ointment [5] [6] |
A stye, also known as a hordeolum, is a bacterial infection of an oil gland in the eyelid. [4] This results in a red tender bump at the edge of the eyelid. [1] [5] The outside or the inside of the eyelid can be affected. [3]
The cause of a stye is usually a bacterial infection by Staphylococcus aureus . [3] [6] Internal styes are due to infection of the meibomian gland while external styes are due to an infection of the gland of Zeis. [5] A chalazion on the other hand is a blocked meibomian gland without infection. [4] A chalazion is typically in the middle of the eyelid and not painful. [5]
Often a stye will go away without any specific treatment in a few days or weeks. [3] Recommendations to speed improvement include warm compresses. [5] Occasionally antibiotic eye ointment may be recommended. [6] While these measures are often recommended, there is little evidence for use in internal styes. [3] The frequency at which styes occur is unclear, though they may occur at any age. [2]
The first sign of a stye is a small, yellowish spot at the center of the bump that develops as pus and expands in the area. [7]
Other stye symptoms may include:
Stye complications occur in very rare cases. However, the most frequent complication of styes is progression to a chalazion that causes cosmetic deformity, corneal irritation, and often requires surgical removal. [10] Complications may also arise from the improper surgical lancing, and mainly consist of disruption of lash growth, lid deformity or lid fistula. Large styes may interfere with one's vision.
Eyelid cellulitis is another potential complication of eye styes, which is a generalized infection of the eyelid. Progression of a stye to a systemic infection (spreading throughout the body) is extremely rare, and only a few instances of such spread have been recorded. [11]
A stye is caused by a bacterial infection. The bacteria are Staphylococcus aureus in about 95% of cases. [12] The infection leads to the blocking of an oil gland at the base of the eyelash. Styes are experienced by people of all ages. Styes can be triggered by poor nutrition, sleep deprivation, lack of hygiene, lack of water, and rubbing of the eyes. Styes can be secondary to blepharitis or a deficiency in immunoglobulin. [13]
Stye prevention is closely related to proper hygiene. Proper hand washing can reduce the risks of developing not only styes, but also many other types of infections.
Upon awakening, application of a warm washcloth to the eyelids for one to two minutes may be beneficial in decreasing the occurrence of styes by liquefying the contents of the oil glands of the eyelid and thereby preventing blockage. [14]
To prevent styes, cosmetics and cosmetic eye tools should not be shared among people. Like with all infections, regular hand washing is essential, and the eyes should not be rubbed or touched with unclean hands. Contaminated eye makeup should be discarded and sharing of washcloths or face towels should be curtailed, to avoid spreading the infection between individuals. [15] [16] Breaking the stye may spread bacteria contained in the pus and should be avoided. [17]
Most cases of styes resolve on their own within one to two weeks, without professional care. [3] The primary treatment is application of warm compresses.[ medical citation needed ] As a part of self-care at home, people may cleanse the affected eyelid with tap water or with a mild, nonirritating soap or shampoo (such as baby shampoo) to help clean crusted discharge. Cleansing must be done gently and while the eyes are closed to prevent eye injuries. [18]
People with styes should avoid eye makeup (e.g., eyeliner), lotions, and wearing contact lenses, since these can aggravate and spread the infection (sometimes to the cornea). [19] People are advised not to lance the stye themselves, as serious infection can occur. [19] Pain relievers such as acetaminophen may be used.
Evidence to support the use of antibiotic eye ointment is poor. [6] Occasionally erythromycin ophthalmic ointment is recommended. [20] Other antibiotics, such as chloramphenicol or amoxicillin may also be used. [21] Chloramphenicol is used successfully in many parts of the world, but contains a black box warning in the United States due to concerns about aplastic anemia, which on rare occasions can be fatal.
Antibiotics are normally given to people with multiple styes or with styes that do not seem to heal, and to people who have blepharitis or rosacea.
Incision and drainage is performed if resolution does not begin in the next 48 hours after warm compresses are started. Medical professionals will sometimes lance a particularly persistent or irritating stye with a needle to accelerate its draining. [22]
Surgery is the last resort in stye treatment. Styes that do not respond to any type of therapies are usually surgically removed. Stye surgery is performed by an ophthalmologist, and generally under local anesthesia. The procedure consists of making a small incision on the inner or outer surface of the eyelid, depending if the stye is pointing externally or not. After the incision is made, the pus is drained out of the gland, and very small sutures are used to close the lesion. Sometimes the removed stye is sent for a histopathological examination to investigate possibility of skin cancer.
A 2017 Cochrane review found low-certainty evidence that acupuncture helps in hordeolum compared with antibiotics or warm compresses. [23] There was also low-certainty evidence that acupuncture plus usual treatment may increase the chance of hordeolum getting better, though they could not rule out placebo or observer effect, since the studies reviewed either had no positive control, were not blinded, or both. [23]
Although styes are harmless in most cases and complications are very rare, styes often recur. They do not cause intraocular damage, meaning they do not affect the eye. Styes normally heal on their own by rupturing within a few days to a week causing the relief of symptoms, but if one does not improve or it worsens within two weeks, a doctor's opinion should be sought. Few people require surgery as part of stye treatment. With adequate treatment, styes tend to heal quickly and without complications.
The prognosis is better if one does not attempt to squeeze or puncture the stye, as infection may spread to adjacent tissues. Also, patients are recommended to call a doctor if they encounter problems with vision, the eyelid bump becomes very painful, the stye bleeds or reoccurs, or the eyelid or eyes becomes red. [24]
The word stye (first recorded in the 17th century) is probably a back-formation from styany (first recorded in the 15th century), [25] which in turn comes from styan plus eye, [26] the former of which in turn comes from the old English stīġend, meaning "riser", from the verb stīgan, "to rise". The older form styan is still used in Ulster Scots today.
The homonym sty found in the combination pigsty has a slightly different origin, namely it comes from the Old English stiġ-fearh—fearh (farrow) is the Old English word for "piglet"—where stiġ meant "hall" (cf. steward), possibly an early Old Norse loanword, which could be cognate with the word stīgan above. [27]
The synonymous late Latin expression is hordeolum, a modulation of the word hordeolus, which is related to hordeum ("barley"), after its resemblance to a barleycorn. In Czech, a sty is called ječné zrno (from ječmen "barley" and zrno "seed or grain"); in German, it is called Gerstenkorn (barleycorn). In Hebrew it is called שעורה Seh-oh-Ráh ("barley"). In Polish it is called jęczmień ("barley"). In Hungarian it is called árpa ("barley"). In Turkish it is called arpacık (small barley, barleylet)
Conjunctivitis, also known as pink eye or Madras eye, is inflammation of the outermost layer of the white part of the eye and the inner surface of the eyelid. It makes the eye appear pink or reddish. Pain, burning, scratchiness, or itchiness may occur. The affected eye may have increased tears or be "stuck shut" in the morning. Swelling of the white part of the eye may also occur. Itching is more common in cases due to allergies. Conjunctivitis can affect one or both eyes.
Impetigo is a contagious bacterial infection that involves the superficial skin. The most common presentation is yellowish crusts on the face, arms, or legs. Less commonly there may be large blisters which affect the groin or armpits. The lesions may be painful or itchy. Fever is uncommon.
Mastitis is inflammation of the breast or udder, usually associated with breastfeeding. Symptoms typically include local pain and redness. There is often an associated fever and general soreness. Onset is typically fairly rapid and usually occurs within the first few months of delivery. Complications can include abscess formation.
Blepharitis, sometimes known as granulated eyelids, is one of the most common ocular conditions characterized by inflammation, scaling, reddening, and crusting of the eyelid. This condition may also cause swelling, burning, itching, or a grainy sensation when introducing foreign objects or substances to the eye. Although blepharitis by itself is not sight-threatening, it can lead to permanent alterations of the eyelid margin. The primary cause is bacteria and inflammation from congested meibomian oil glands at the base of each eyelash. Other conditions may give rise to blepharitis, whether they be infectious or noninfectious, including, but not limited to, bacterial infections or allergies.
An eyelid is a thin fold of skin that covers and protects an eye. The levator palpebrae superioris muscle retracts the eyelid, exposing the cornea to the outside, giving vision. This can be either voluntarily or involuntarily. "Palpebral" means relating to the eyelids. Its key function is to regularly spread the tears and other secretions on the eye surface to keep it moist, since the cornea must be continuously moist. They keep the eyes from drying out when asleep. Moreover, the blink reflex protects the eye from foreign bodies. A set of specialized hairs known as lashes grow from the upper and lower eyelid margins to further protect the eye from dust and debris.
Dry eye syndrome, also known as keratoconjunctivitis sicca, is the condition of having dry eyes. Symptoms include dryness in the eye, irritation, redness, discharge, blurred vision, and easily fatigued eyes. Symptoms range from mild and occasional to severe and continuous. Dry eye syndrome can lead to blurred vision, instability of the tear film, increased risk of damage to the ocular surface such as scarring of the cornea, and changes in the eye including the neurosensory system.
Cherry eye is a disorder of the nictitating membrane (NM), also called the third eyelid, present in the eyes of dogs and cats. Cherry eye is most often seen in young dogs under the age of two. Common misnomers include adenitis, hyperplasia, adenoma of the gland of the third eyelid; however, cherry eye is not caused by hyperplasia, neoplasia, or primary inflammation. In many species, the third eyelid plays an essential role in vision by supplying oxygen and nutrients to the eye via tear production. Normally, the gland can turn inside-out without detachment. Cherry eye results from a defect in the retinaculum which is responsible for anchoring the gland to the periorbita. This defect causes the gland to prolapse and protrude from the eye as a red fleshy mass. Problems arise as sensitive tissue dries out and is subjected to external trauma Exposure of the tissue often results in secondary inflammation, swelling, or infection. If left untreated, this condition can lead to dry eye syndrome and other complications.
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A boil, also called a furuncle, is a deep folliculitis, which is an infection of the hair follicle. It is most commonly caused by infection by the bacterium Staphylococcus aureus, resulting in a painful swollen area on the skin caused by an accumulation of pus and dead tissue. Boils are therefore basically pus-filled nodules. Individual boils clustered together are called carbuncles. Most human infections are caused by coagulase-positive S. aureus strains, notable for the bacteria's ability to produce coagulase, an enzyme that can clot blood. Almost any organ system can be infected by S. aureus.
Trachoma is an infectious disease caused by bacterium Chlamydia trachomatis. The infection causes a roughening of the inner surface of the eyelids. This roughening can lead to pain in the eyes, breakdown of the outer surface or cornea of the eyes, and eventual blindness. Untreated, repeated trachoma infections can result in a form of permanent blindness when the eyelids turn inward.
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Meibomian glands are sebaceous glands along the rims of the eyelid inside the tarsal plate. They produce meibum, an oily substance that prevents evaporation of the eye's tear film. Meibum prevents tears from spilling onto the cheek, traps them between the oiled edge and the eyeball, and makes the closed lids airtight. There are about 25 such glands on the upper eyelid, and 20 on the lower eyelid.
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