Anal warts, also known as condyloma, are growths found on the skin around the anus (rectal opening), in the anal canal, or in the lower rectum. Anal warts are caused by the human papilloma virus, which is usually transmitted through contact but not n...
Angiomas are benign tumors that are made up of small blood vessels. They usually appear at or near the surface of the skin. It is a red dome-shaped lesion usually occurring on the trunk and formed as a result of the weakening of the capillary wall. T...
Mastocytosis is a disorder characterized by mast cell proliferation and accumulation within various organs, most commonly the skin. Mast cells are located in connective tissue, including the skin, the linings of the stomach and intestine, and other s...
Aphthous ulcers (aphthae, or canker sores) are ulcers that form on the mucous membranes of the mouth or genitals. A canker sore is a painful, open sore in the mouth, which is white or yellow and surrounded by a bright red area. Canker sores are commo...
Lymphomatoid papulosis (LyP) is a stubborn persistent rash that usually occurs on the chest, stomach, back, arms and legs. The disease is characterized by recurrent crops of pruritic papules at different stages of development that predominantly arise...
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