Commute 45 to 59 min. 7.20%. Commute greater than 60 min.
1 Oral Ulcers: Usually, an ulcer is referred to as an open wound which is formed inside the mouth and this occurs due to the invasion of micro organisms. 2  Sometimes, blood blisters are caused due to the skin infections caused as a side effect of medications. 3  Ulcers are of two types they are: Canker sores and Cold sores.
Miscellaneous causes of blood blisters in mouth include having a skin infection inside your mouth, having bowel disease, Behcet's syndrome, high blood pressure, problems with dentures, and neutrophil deficiency, being under hormonal stress, eating or drinking acidic foods, etc.