<unk>  is a superficial condition usually associated with the scalp. Sufferers show visible folds, ridges or creases on the surface of the scalp.
Cutis verticis gyrata
Cutis rhomboidalis nuchae
Commotio cordis
Venae cordis minimae
Tentorium cerebelli
Tunica externa 
Cusp of Carabelli
Genu valgum