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.
1 You will consistently find a blood blister in the mouth of alcoholics, because alcohol can cause ulcerations inside your mouth.  You may injure the inner tissues of your cheek when eating hard food items or just accidently biting your cheeks. This kind of injury increases your chances of getting blood blister.