A sebaceous gland or oil gland is a microscopic exocrine gland in the skin that opens into a hair follicle to secrete an oily or waxy matter, called sebum, which lubricates the hair and skin of mammals. In humans, sebaceous glands occur in the greatest number on the face and scalp, but also on all parts of the skin except the palms of the hands and soles of the feet. In the eyelids, meibomian glands, also called tarsal glands, are a type of sebaceous gland that secrete a special type of sebum into tears. Surrounding the female nipples, areolar glands are specialized sebaceous glands for lubricating the nipples. Fordyce spots are benign, visible, sebaceous glands found usually on the lips, gums and inner cheeks, and genitals.
The BMJ is a weekly peer-reviewed medical journal, published by BMJ Group, which in turn is wholly-owned by the British Medical Association (BMA). The BMJ has editorial freedom from the BMA. It is one of the world's oldest general medical journals. Previously called the British Medical Journal, the title was officially shortened to BMJ in 1988, and then changed to The BMJ in 2014. The journal is published by BMJ Publishing Group Ltd, a subsidiary of the British Medical Association (BMA). The current editor-in-chief of The BMJ is Kamran Abbasi, who was appointed in January 2022.
Auspitz's sign is the appearance of punctate bleeding spots when psoriasis scales are scraped off, named after Heinrich Auspitz. It may also be seen in Darier's disease and actinic keratosis.
Dyshidrosis is a type of dermatitis, characterized by itchy vesicles of 1–2 mm in size, on the palms of the hands, sides of fingers, or bottoms of the feet. Outbreaks usually conclude within three to four weeks, but often recur. Repeated attacks may result in fissures and skin thickening. The cause of the condition is not known.
Selenium disulfide, also known as selenium sulfide, is a chemical compound and medication used to treat seborrheic dermatitis, dandruff, and pityriasis versicolor. It is applied to the affected area as a lotion or shampoo. Symptoms frequently return if treatment is stopped.
An exanthem is a widespread rash occurring on the outside of the body and usually occurring in children. It is usually caused by a virus, but an exanthem can be caused by bacteria, toxins, drugs, other microorganisms, or as the result from autoimmune disease.
Fissure of the nipple, colloquially referred to as jogger's nipple, is a condition that is the result of chafing of one or both nipples. This can occur in both men and women during physical exercise such as long-distance running where there is prolonged friction between the nipple and clothing. The issue is also commonly seen in surfers who do not wear rash guards or wetsuits.
Prurigo nodularis (PN), also known as nodular prurigo, is a skin disorder characterized by pruritic (itchy), nodular lesions, which commonly appear on the trunk, arms and legs. Patients often present with multiple excoriated nodules caused by chronic scratching. Although the exact cause of PN is unknown, PN is associated with other dermatologic conditions such as untreated or severe atopic dermatitis and systemic causes of pruritus including liver disease and end stage kidney disease. The goal of treatment in PN is to decrease itching. PN is also known as Hyde prurigo nodularis, or Picker's nodules.
Interstitial granulomatous dermatitis with arthritis (IGDA) or Ackerman dermatitis syndrome is a skin condition that most commonly presents with symmetrical round-to-oval red or violet plaques on the flanks, armpits, inner thighs, and lower abdomen.
Genital leiomyomas are leiomyomas that originate in the dartos muscles, or smooth muscles, of the genitalia, areola, and nipple. They are a subtype of cutaneous leiomyomas that affect smooth muscle found in the scrotum, labia, or nipple. They are benign tumors, but may cause pain and discomfort to patients. Genital leiomyoma can be symptomatic or asymptomatic and is dependent on the type of leiomyoma. In most cases, pain in the affected area or region is most common. For vaginal leiomyoma, vaginal bleeding and pain may occur. Uterine leiomyoma may exhibit pain in the area as well as painful bowel movement and/or sexual intercourse. Nipple pain, enlargement, and tenderness can be a symptom of nipple-areolar leiomyomas. Genital leiomyomas can be caused by multiple factors, one can be genetic mutations that affect hormones such as estrogen and progesterone. Moreover, risk factors to the development of genital leiomyomas include age, race, and gender. Ultrasound and imaging procedures are used to diagnose genital leiomyomas, while surgically removing the tumor is the most common treatment of these diseases. Case studies for nipple areolar, scrotal, and uterine leiomyoma were used, since there were not enough secondary resources to provide more evidence.
Erosive pustular dermatitis of the scalp presents with pustules, erosions, and crusts on the scalp of primarily older Caucasian females, and on biopsy, has a lymphoplasmacytic infiltrate with or without foreign body giant cells and pilosebaceous atrophy.
Chevron nail, also known as a herringbone nail, is a rare transient fingernail ridge pattern seen in children, a ridge arising from the proximal nailfold and converging in a V-shaped pattern towards the midpoint distally. The nail growth pattern has no known association with medical problems and tends to resolve by early adulthood.
Silicone granulomas are a skin condition that occur as a reaction to liquid silicones, and are characterized by the formation of nodules.
Airbag dermatitis is skin irritation secondary to the deployment of airbags. The diagnosis of "air bag dermatitis" is relatively recent; the first case was reported in 1994.
Granuloma gluteale infantum is a cutaneous condition that appears in the anogenital region of infants as a complication of diaper dermatitis. According to some, no granulomas are found.
Rheumatoid neutrophilic dermatitis, also known as rheumatoid neutrophilic dermatosis, is a cutaneous condition associated with rheumatoid arthritis.
Garrod's pads, also known as violinist's pads, are a cutaneous condition characterized by calluses on the dorsal aspect of the interphalangeal joints, i.e. the back side of the finger joints. They are often seen in violin, viola, and cello players, along with fiddler's neck and other dermatologic conditions peculiar to string musicians. Although Garrod's pads are conventionally described as appearing on the proximal interphalangeal joint, distal interphalangeal joint involvement has also been described.
Goeckerman therapy is a regimen for treatment of moderate to severe plaque psoriasis using a combination of crude coal tar and artificial ultraviolet radiation. It is a specialized form of light therapy.
Topical steroid withdrawal, also known as red burning skin and steroid dermatitis, has been reported in people who apply topical steroids for 2 weeks or longer and then discontinue use. Symptoms affect the skin and include redness, a burning sensation, and itchiness, which may then be followed by peeling.
