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Keratosis pilaris. 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]
Vasculitis is a group of disorders that destroy blood vessels by inflammation. [2] Both arteries and veins are affected. Lymphangitis (inflammation of lymphatic vessels) is sometimes considered a type of vasculitis. [3] Vasculitis is primarily caused by leukocyte migration and resultant damage.
The aberrant keratinization of the follicular infundibulum causes keratosis pilaris atrophicans, which is characterized by irritation and blockage of the growing hair shaft. Alopecia, fibrosis, atrophy, and shrinking of the hair bulb are caused by persistent inflammation. The possibility that the genes controlling follicular keratinization are ...
Keratosis pilaris usually appears as small red bumps on the skin. Dermatologists share the best way to treat it and reduce its appearance. Skip to main content. 24/7 Help. For premium support ...
[6]: 562 [10] Multiple minute digitate hyperkeratosis , a rare cutaneous condition, with about half of cases being familial Focal acral hyperkeratosis (also known as "Acrokeratoelastoidosis lichenoides,") is a late-onset keratoderma , inherited as an autosomal dominant condition, characterized by oval or polygonal crateriform papules developing ...
Actinic keratosis (AK), sometimes called solar keratosis or senile keratosis, [1] [2] is a pre-cancerous [3] area of thick, scaly, or crusty skin. [ 4 ] [ 5 ] Actinic keratosis is a disorder ( -osis ) of epidermal keratinocytes that is induced by ultraviolet (UV) light exposure ( actin- ).
Other names. Keratosis spinulosa [1]: 776. Specialty. Dermatology. Lichen spinulosus is a rare skin disorder characterized by follicular keratotic papules that are grouped into large patches. [2] It is a variant of keratosis pilaris named for its resemblance to a patch of lichen.
A trichilemmal cyst (or pilar cyst) is a common cyst that forms from a hair follicle, most often on the scalp, and is smooth, mobile, and filled with keratin, a protein component found in hair, nails, skin, and horns. Trichilemmal cysts are clinically and histologically distinct from trichilemmal horns, hard tissue that is much rarer and not ...