solar keratosis

solar keratosis.

See actinic keratosis.

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keratosis [ker″ah-to´sis]

any horny growth, such as a wart or callosity.

actinic keratosis a sharply outlined wartlike or keratotic growth, which may develop into a cutaneous horn, and may become malignant; it usually occurs in the middle aged or elderly and is due to excessive exposure to the sun. Called also senile or solar keratosis. (See Atlas 3, Part F).

keratosis follicula´ris a slowly progressive autosomal dominant disorder of keratinization characterized by pinkish to tan or skin-colored papules on the seborrheic areas of the body that coalesce to form plaques, which may become crusted and secondarily infected; over time, the lesions may become darker and may fuse to form papillomatous and warty malodorous growths. Called also Darier's disease and Darier-White disease.

keratosis palma´ris et planta´ris palmoplantar keratoderma.

keratosis pharyn´gea horny projections from the tonsils and pharyngeal walls. Called also pharyngokeratosis.

keratosis pila´ris hyperkeratosis limited to the hair follicles.

keratosis puncta´ta a hereditary hyperkeratosis in which the lesions are localized in multiple points on the palms and soles.

seborrheic keratosis (keratosis seborrhe´ica) a benign, noninvasive tumor of epidermal origin, marked by numerous yellow or brown, sharply marginated, oval, raised lesions.

senile keratosis (solar keratosis) actinic keratosis.

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keratosis

any horny growth on the skin, such as a wart or callosity; a firm, elevated, circumscribed area of excessive keratin production. Common in humans but uncommon in animals.

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actinic keratosis

varies from a sharply outlined verrucous or keratotic growth to poorly defined areas of erythema, which are premalignant lesions. Due to excessive exposure to the sun. Called also solar keratosis.

equine cannon keratosis

see cannon keratosis.

linear keratosis

see equine linear keratosis.

keratosis pilaris

hyperkeratosis limited to the hair follicles.

seborrheic keratosis, keratosis seborrheica

single or multiple elevated plaques and nodules often hyperpigmented with a hyperkeratotic greasy surface. They are benign, of unknown etiology, but have no connection with seborrhea. Occur in dogs and humans.

solar keratosis

see actinic keratosis (above).

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solar

emanating from or pertaining to the sun's rays.

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solar burn

see sunburn.

solar dermatitis

see solar dermatitis.

solar elastosis

degenerative changes in the dermis caused by excessive solar radiation.

solar keratosis

see actinic keratosis.

nasal solar dermatitis

see solar dermatitis, collie nose.