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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- ).
Actinic keratosis symptoms and signs With actinic keratosis, you may have bumps that look and feel like acne or pimples; or gray, pink or red lesions that are rough. Causes of actinic keratosis
Actinic keratosis, pre-cancerous area of thick, scaly, or crusty skin (Below) with cutaneous horn tissue (above) Cutaneous horns , also known by the Latin name cornu cutaneum , are unusual keratinous skin tumors with the appearance of horns, or sometimes of wood or coral.
Symptoms: Hard lump with a scaly top or ulceration. [1] Risk factors: Ultraviolet radiation, actinic keratosis, tobacco smoking, lighter skin, arsenic exposure, radiotherapy, poor immune system function, HPV infection [2] Diagnostic method: Tissue biopsy [2] [3] Differential diagnosis: Keratoacanthoma, actinic keratosis, melanoma, warts, basal ...
Actinic keratoses What it looks like: Actinic keratoses are pre-cancerous changes to the skin caused by sun damage, explains Dr. Zeichner. “The rash feels like sandpaper when you run your ...
“Sometimes an isolated red rough dry patch of skin forms and is slightly tender when exposed to sun—this can be a Squamous Cell Carcinoma, or a precancerous Actinic Keratosis,” Dr. Thosani says.
Actinic cheilitis is cheilitis (lip inflammation) caused by long term sunlight exposure. Essentially it is a burn , [ 2 ] and a variant of actinic keratosis which occurs on the lip. [ 5 ] It is a premalignant condition , [ 6 ] as it can develop into squamous cell carcinoma (a type of mouth cancer ).
Lichenoid actinic keratosis; Lichenoid keratosis (benign lichenoid keratosis, lichen planus-like keratosis, solitary lichen planus, solitary lichenoid keratosis) Linear verrucous epidermal nevus (linear epidermal nevus, verrucous epidermal nevus) Malignant acrospiroma (spiradenocarcinoma) Malignant mixed tumor (malignant chondroid syringoma)