Long-term oral ulcers may be recurrent aphthous ulcers, oral cancer and other diseases. Clinical manifestations can be used to diagnose recurrent aphthous ulcers, and clinical manifestations and tissue biopsy can be used to diagnose oral cancer, as follows.
1. Recurrent Aphthous ulcer: it can be based on the characteristics of its history, such as recurrence, self-limitation, and clinical features, including yellow pseudomembrane covering the surface of the ulcer, surrounded by a red halo, central depression, and pain, etc. Generally, there is no need for special auxiliary examination or biopsy.
2. Oral cancer: clinical manifestations are often cauliflower-like, or necrotic shedding and ulcers are formed, and tissue biopsy is mainly characterized by squamous differentiation of cancer cells and invasion of surrounding normal tissues.
There may be other reasons for long-term mouth ulcers, so it is recommended to go to regular medical institutions to receive professional treatment.