The causes of black blood blisters on the inner wall of the mouth include bite wounds, oral hemangioma, oral cancer and so on.
1. Bite: If you chew food too fast or eat too hot food, you will easily bite the oral mucosa, which will form black blood blisters, and usually it can heal by itself after a period of time, which is a normal situation.
2. Oral hemangioma: the etiology of this disease is still unclear, it may be related to congenital vascular malformation, or it may be caused by the imbalance of the balance between angiogenic factors and angiogenic inhibitory factors, resulting in the abnormal proliferation of vascular endothelial cells. Typical symptoms are bright red or purplish-red slightly elevated plaques on the mucosa, which can be manifested as black blood blisters on the inner wall of the mouth.
3. Oral cancer: there is no research on the cause of this disease. However, relevant researches show that the occurrence of oral cancer is related to smoking, alcoholism, chewing betel nut, viral infection, heredity and other factors. The main symptom is the presence of nodules, lumps and other lesions in the oral mucosa, while some patients may have black blood blisters on the inner wall of the mouth.
It is recommended that patients with black blood blisters on the inner wall of the mouth go to the hospital for a complete examination to determine the specific cause.