Treatment: No therapy is needed other than to recommend sun protection, sunscreen use, and routine skin examinations in the future. For cosmetic reasons, lentigines can be removed in a myriad…

Pathogenesis: Eccrine syringomas are believed to be an overgrowth of the eccrine sweat ductal apparatus. Researchers have proposed that this proliferation is caused by an inflammatory response to an as…

One of the more important and unique variants of lentigines are the psoralen + ultraviolet A light (PUVA) lentigines. PUVA lentigines are iatrogenic in nature and occur after medical therapy…

Pathogenesis: The precipitating factor that initiates the formation of a dermatofibroma is thought to be superficial trauma, such as from a bug bite, which causes the fibrous tissue proliferation. The…

The eccrine porocarcinoma is very uncommon; histologically, it is a tumor that is poorly circumscribed and often found in conjunction with an eccrine poroma. Cells with multiple large nuclei and…

Treatment: Surgical excision is curative. Surgical removal with carbon dioxide laser ablation has also been found to be highly successful. Because of the number and size of the tumors in…

Treatment: No therapy is required. Surgical excision is likely to produce a mutilating scar unless the nevus is extraordinarily small. The hypertrichosis can be treated for cosmetic purposes with any…

Treatment: No therapy is necessary for these extraordinarily common skin growths. They are mostly overlooked and not even mentioned on routine skin examination. The rare strangulated or thrombosed skin tag…

Scar is another secondary descriptive term used to describe the healing of the epidermis and dermis, usually in a linear or a geographic pattern, caused by some form of trauma…

The word patch is sometimes used to describe a large macule. A more precise definition of a patch is an area of the skin that is not elevated but has…