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When actinic granuloma-like lesions appear in non-exposed areas, the rash is known as annular elastolytic giant cell granuloma. Though these can be easily distinguished based on histopathologic features and laboratory findings, the differential diagnosis includes tinea corporis , sarcoidosis , subacute lupus erythematosus , granuloma annulare ...
Histopathologically, an annular elastolytic giant-cell granuloma exhibits a granulomatous reaction accompanied by phagocytosis of the elastic fibers, elastolysis, and multinucleate giant cells devoid of or reduced in elastin fibers. Other hallmarks of the histopathology include the lack of mucin deposition and collagen necrobiosis. [7]
Diseases of the Skin and Subcutaneous Tissue XIII 710–739: Diseases of the Musculoskeletal System and Connective Tissue XIV 740–759: Congenital Anomalies XV 760–779: Certain Conditions originating in the Perinatal Period XVI 780–799: Symptoms, Signs and Ill-defined Conditions XVII 800–999: Injury and Poisoning E800–E999
Skin conditions resulting from errors in metabolism are caused by enzymatic defects that lead to an accumulation or deficiency of various cellular components, including, but not limited to, amino acids, carbohydrates, and lipids. [16] Acute intermittent porphyria; Adrenoleukodystrophy (Schilder's disease) Alkaptonuria
Chronic actinic dermatitis is a condition characterized by chronic skin inflammation due to sunlight or artificial light. It is similar to solar urticaria or cholinergic urticaria . Patients often have related skin conditions that cause dermatitis in response to a variety of stimuli , including flowers, sunscreens, and cosmetics.
Actinic elastosis, also known as solar elastosis, is an accumulation of abnormal elastin (elastic tissue) in the dermis of the skin, [2] or in the conjunctiva of the eye, [3] which occurs as a result of the cumulative effects of prolonged and excessive sun exposure, a process known as photoaging.
They discovered that inhibiting a protein called Activin A could stop dyskinesia symptoms and essentially erase the brain’s “bad memory” response to certain Parkinson’s therapies.
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 ).