Commute 45 to 59 min. 7.20%. Commute greater than 60 min.
6. This condition causes blood blisters to form on the inner cheek, gums, tongue and/or the roof of the mouth. It is caused by the herpes simplex virus 1 and symptoms, like pain, a burning sensation, fatigue and fever, will be felt.
Causes. 1  Kissing, hugging or close contact with a person who has fever blisters. 2  Through indirect contact, like sharing a towel/handkerchief or lip balm of the infected person. 3  Virus can easily spread through cuts or bruises on the skin. 4  Cosmetic surgery. 5  Lip injury. 6  Dental treatment. 7  Stress. 8  Hormonal changes.