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.
Lip blisters are also called as fever blisters or cold sores. It is contagious and is passed on to another person through saliva or sharing glasses. A lip blister occurs in groups on the upper part of lips and is caused by herpes simplex virus-1. Generally the virus attacks your body and remains inactive inside and develops further when you have some infection or fever or weakened immunity due to other reasons.