多数口腔溃疡是由于创伤和口疮所致。然而,口腔溃疡可能是各种粘膜和全身性疾病的一种表现,包括感染,药物反应、血液疾病和胃肠系统疾病,也可能是由于某些恶性疾病所引起。在一般情况下,根据病史和无进一步损伤的情况,溃疡很快愈合,通常即可诊断。若 Most oral ulcers are caused by trauma and mouth sores. However, oral ulcers may be a manifestation of various mucosal and systemic diseases, including infections, drug reactions, blood diseases and gastrointestinal diseases, and may also be caused by certain malignant diseases. Under normal circumstances, according to the history and without further damage, ulcers heal quickly, usually can be diagnosed. If