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.
Other causes of tongue blood blisters include: 1  An allergic reaction due to food and medication can result into red bumps on the tongue. 2  Nutritional deficiency: particularly, vitamin B12 and vitamin C deficiency can trigger blood blister on the tongue and the oral cavity.