Cutis verticis gyrata is a superficial medical condition usually associated with thickening of the scalp

Scalp

The scalp is the anatomical area bordered by the face anteriorly and the neck to the sides and posteriorly.-Layers:It is usually described as having five layers, which can conveniently be remembered as a mnemonic:...

. The condition was first described by Alibert in 1837

Sufferers show visible folds, ridges or creases on the surface of the top of the scalp. The number of folds can vary from 2 to roughly 10 and are typically soft and spongy. These folds cannot be corrected with pressure. The condition typically affects the central and rear regions of the scalp, but can sometimes can involve the entire scalp.

Hair loss can occur over time where the scalp thickens, though hair within any furrows remains normal.