Patients who are not treated early often suffer long-term functional disability such as restriction of joint movement as well as the obvious cosmetic problem.

早期未得到治疗的患者往往患有长期功能丧失，例如限制关节运动以及明显的美容问题。

youdao

It can rarely affect underlying muscle and bone and when severe can progress over years causing significant cosmetic, structural and functional disability.

本病可罕见累及深层肌肉和骨骼，病情严重时可在数年内进展，导致外貌、结构和功能发生重大缺陷。

youdao