Frequent blood blisters on the tongue may be traumatic blood blisters, allergic diseases, blood diseases and so on.
1. Traumatic blood blisters: Generally it is submucosal bleeding formed by eating hard and brittle food and breaking the mucous membrane, or there are some sharp marginal ridges, tooth tips or stumps or stumps near the mucous membrane may cause traumatic blood blisters to appear in the oral cavity.
2. Allergic diseases: drug or food allergies may lead to blood blisters in the oral mucosa.
3. Blood diseases: Blood diseases such as thrombocytopenic purpura may also cause oral blood blisters.
Oral blood blisters alone can not accurately determine the cause, but also need to be combined with the characteristics of the medical history, other test results in order to make an accurate judgment, it is recommended to clarify the cause of the disease under the guidance of a doctor.