How do you treat a cold sore?

Home remedies

* Over-the-counter (OTC) pain relievers, such as acetaminophen (Tylenol) or ibuprofen (Advil), can help relieve fever, headache, and muscle pain.

* Applying a cold compress to the cold sore can help reduce pain and swelling.

* Using a humidifier can help keep the air moist and prevent the cold sore from drying out and cracking.

* Drinking plenty of fluids can help prevent dehydration.

Medical treatments

* Your doctor may prescribe an antiviral medication, such as acyclovir (Zovirax), valacyclovir (Valtrex), or famciclovir (Famvir), to help clear up the cold sore faster and reduce the risk of spreading it to others.

* If the cold sore becomes very painful or swollen, your doctor may prescribe a topical anesthetic or a steroid cream to help relieve pain and inflammation.

Prevention

* Avoid close contact with people who have cold sores.

* Wash your hands frequently with soap and water.

* Do not share personal items, such as towels, cups, or utensils, with someone who has a cold sore.

* Avoid touching your eyes or nose if you have a cold sore.

* If you have a cold sore, apply a cold compress to it and avoid picking at it.