A pyogenic granuloma is a common and benign cutaneous tumor. Its formation is typically triggered by minor trauma, bacterial infection, or hormonal changes.
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A syringoma is a benign tumor of the sweat gland that most commonly appears in clusters on the eyelids but may also appear elsewhere on the face, armpits, upper chest, navel and genitals.
A venous lake is a common vascular deformity that can appear on the vermilion border of the lip, on the ear, or on the face.
It is known the immune system is almost always involved, however, it is not typically considered to be an autoimmune disease, it lacks certain characteristics.
dermatofibroma, also known as a benign fibrous histiocytoma, is a common, benign, and scar-like nodule.