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.
Canker sores, which occur on the inside of the mouth, can stem from an entirely different issue. Small white lesions on the inner lip or inside of the cheek are called aphthous ulcers. These may be caused by sources other than the herpes virus.