What are the causes of a fever blister or cold sore?

Virus. Cold sores are normally caused by herpes simplex i & most people have this virus living in the nerves of the mouth. Some rarely have outbreaks while others have them more frequently - usually when under stress. Your md or dentist can prescribe medication to help them resolve faster & reduce the outbreaks.

Related Questions

What are the causes of a fever blister or cold sore?

Cold sores. Cold sores or fever blisters are a type of viral infection caused by the herpes simplex virus. The virus is transmitted by contact with an infected individual. Once the virus enters the skin and causes infection, it tends to stay and can cause recurrences, particularly when there is intense sun exposure, an illness like cold/flu, menstrual cycles, minor trauma to lips such as burns or scratches. Read more...
Skin contact. Herpes simplex or fever blisters are a viral infection transmitted by skin to skin contact with someone who has been infected with the herpes virus. Herpes can be transmitted by someone that does not have an active lesion at the time of contact so active lesions are not necessary to transmit the virus to someone else. Read more...

What to do if I have a fever blister or cold sore on my lip. How could I have gotten this?

Virus. Cold sores are normally caused by herpes simplex i & most people have this virus living in the nerves of the mouth. Some rarely have outbreaks while others have them more frequently - usually when under stress. Your md or dentist can prescribe medication to help them resolve faster & reduce the outbreaks. Read more...

What is a fever blister? A cold sore?

Virus. Both caused by herpes simplex virus type1 .Passed from person to person by saliva.1st sign of cold sore is tingling, burning, itching followed by swelling & redness.Within 24-48 hours, one or more tiny blisters (fever blisters) appear.These blisters pop & form painful sores (cold sores).The sores eventually are covered by crusts, which look like scabs.D crusts are shed &form again while d sore heals. Read more...

How do I know if I have a fever blister or a cold sore?

One and same thing. Fever blisters and cold sores are the same names for painful ulcerating blisters caused by herpes simplex virus. Many people carry the virus, it "hides" in the nerve trunks that supply the face. Usually occur on outside border of lower lip & rarely inside the mouth as well. It starts as a tingling sensation and becomes painful with time. Stress is a major trigger. It will go away~2 weeks. Read more...

Can you tell me what can a cold sore/fever blister look like?

Cold sore. A cold sore is a lesion with blisters (lip, chin, cheek, nostril ; sometimes mouth) which causes burning, pain ; itching. It breaks open ; releases fluid that is teaming with the herpes simplex type 1 virus. Read more...