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.
Blood blister on lip causes. Blister on lips can occur for a number of reason and some cases are due to a certain health-related condition. Some of the known cases include lip or mouth cancer, smoking, cold sore or sexually transmitted disease (STD).