Disease Information for Seborrheic keratosis

Benign eccrine poromas that present as multiple oval, brown-to-black plaques, located mostly on the chest and back; The age of onset is usually in the fourth or fifth decade;

Common benign keratotic raised plagues benign tumors in older adults; Seborrheic keratoses usually are asymptomatic, but they can be an annoyance; Lesions can itch and rub or catch on clothing, thereby becoming inflamed; Patients are sometimes concerned that these enlarging lesions are malignant; Sometimes a person may have many seborrheic keratoses and not notice a dysplastic nevus or a malignant melanoma that develops among the seborrheic keratoses; spontaneous resolution does not occur; The sign of Lesser-Trélat is the association of multiple eruptive seborrheic keratoses with internal malignancy; adenocarcinoma, of the gastrointestinal tract; eruption of seborrheic keratoses may develop after an inflammatory dermatosis (egg, eczema, severe sunburn); typically have an appearance of being stuck on the skin surface ;color of the lesions can vary from pale brown with pink tones to dark brown or black; Differential diagnosis includes malignant melanoma, melanocytic nevus, verruca vulgaris, condyloma acuminatum, fibroepithelial polyp, epidermal nevus, actinic keratoses, pigmented basal cell carcinomas, and squamous cell carcinomas; lentigo maligna; acanthotic seborrheic keratoses resembles a melanocytic nevus, but the surface is less lustrous and the follicular orifices are plugged------(EMedicine)---------------

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