Isolated collagenoma on the scalp: a rare presentation.

Connective tissue nevi of the skin are benign hamartomatous lesions consisting predominantly of one of the components of the extracellular matrix comprising of collagen, elastin or glycosaminoglycans type. Connective tissue nevi may be solitary or multiple, sporadic or inherited. Collagenomas are asymptomatic and usually occurs over upper trunk, arms, back, thighs and soles. We, hereby report a young boy with collagenoma over the scalp, a rare site.