Facial strut often happens in labrum, affect later mucous membrane of labium, tongue, buccal, mental, nose, eye, eyelid, gingival, pharynx, soft palate, forehead, buccal ministry.

• 面部肿胀常发生在上唇，以后波及下唇、舌、颊、颏、鼻、眼、睑、齿龈、咽、软腭、前额、颊部粘膜。