1987 12 Nov. (Fashion section) j10/5 I get ‘hat head’ when I wear a hat for two hours or more because my hair is shaped to my hat.
1997 M. Berry 130 She has hat-head and the man in the corner is staring at her. She holds her hair down with both hands.
2006 D. Arnoult 118 His hat is on the seat beside him. He has a bad case of hat head.