what causes blood blisters on the lips
Blood blisters are formed due to injury, skin infections or damage to the surface of the skin. Chewing of hard food items can lead to blood blisters in the mouth. The following are the few causes of this condition. 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.
The virus of herpes simplex can cause potential danger to people with lowered immunity level. Causes : Lip blisters are caused by herpes simplex virus HSV-1. It may occur due to emotional stress or trauma on the lips or due to prolonged exposure to sunlight. Sometimes it may infect your eyes, fingers and even genitals. Symptoms : Fever, nausea, vomiting, headache are some of the common symptoms of lip blisters.