Herpes simplex is a virus that can be transmitted by touching a sore directly, by kissing a person who has a cold sore, or by having sexual contact with a person who has sores on their genitals. It can also be transmitted from one part of the body to another, such as from a cold sore to a finger. A herpes infection may cause only a single outbreak of sores, but in many cases the person will have recurrent outbreaks. Recurring infections can be triggered by factors such as stress, fatigue, sunlight, or another infection, such as a cold or flu.

Treatment can reduce the number and severity of outbreaks but cannot cure the infection. Most cold sores heal on their own. However, you can manage your symptoms at home by:

Placing a cool, wet towel on the sores three times a day for 20 minutes each time to help reduce redness and swelling.

Taking ibuprofen (such as Advil or Motrin) or acetaminophen (such as Tylenol) to reduce pain.

Using a mouth rinse containing baking soda to soothe a sore mouth.

Avoiding foods that contain acid (such as citrus fruit and tomatoes).

Using nonprescription ointments (such as Orajel, or Anbesol) that numb sore areas in the mouth or on the lips.

I hope you feel better soon! I've never had these but my sister gets them and she said they are very painful.