Rest and drink plenty of fluids
Use acetaminophen or ibuprofen for fever and pain, if appropriate
Use cold foods and drinks to soothe mouth sores
Avoid acidic, spicy, or salty foods
Keep the mouth clean with gentle rinsing
Wash hands often and avoid close contact with others
Clean and disinfect frequently touched surfaces
Keep children home until fever is gone and blisters are drying
Seek medical care if dehydration occurs
Seek medical care if symptoms are severe or worsening
Seek urgent care for trouble breathing, confusion, or signs of serious illness