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Keratosis pilaris (KP; also follicular keratosis, lichen pilaris, or colloquially chicken skin. [1]) is a common, autosomal-dominant, genetic condition of the skin's hair follicles characterized by the appearance of possibly itchy, small, gooseflesh-like bumps, with varying degrees of reddening or inflammation. [2]
Their cause is unclear, [3] and they are not associated with hair follicles. [3] Diagnosis is done by visualisation. [3] They may appear similar to genital warts or molluscum. [3] They were first described in 1896 by American dermatologist John Addison Fordyce. [4]
Within the latter type, the hairs occur in structures called pilosebaceous units, each with hair follicle, sebaceous gland, and associated arrector pili muscle. [4] In the embryo, the epidermis, hair, and glands form from the ectoderm, which is chemically influenced by the underlying mesoderm that forms the dermis and subcutaneous tissues. [5 ...
Hot tub folliculitis, also called Pseudomonal folliculitis or Pseudomonas aeruginosa folliculitis, is a common type of folliculitis featuring inflammation of hair follicles and surrounding skin. [1]: 272 This condition is caused by an infection of the skin and hair follicles by the bacterium Pseudomonas aeruginosa.
The periareolar glands of Montgomery in the breast are also called Montgomery tubercles or Morgagni tubercles. These periareolar glands are small, papular tissue projections at the edge of the areola (nipple).Obstruction of the Montgomery tubercles may result in an acute inflammation, a clear or light brownish fluid may drain out of the areola (nipple discharge), and an subareolar mass may ...
The majority of epidermal inclusion cysts originate from the infundibular portion of the hair follicle, thus explaining the interchangeable, [14] yet inaccurate, use of these two terms. Epidermoid cyst may be classified as a sebaceous cyst , [ 15 ] although technically speaking it is not sebaceous. [ 16 ] "
Dermatologists share tips to prevent and treat anxiety-related skin rashes, including hives, rosacea, acne, eczema and more. Can stress cause a rash? Experts reveal links between anxiety and skin
Pilonidal disease is a type of skin infection which typically occurs as a cyst between the cheeks of the buttocks and often at the upper end. [1] [3] Symptoms may include pain, swelling, and redness. [1]