what to do about a cold sore in your mouth?
['avoid hot, spicy, salty, citrus-based, and high-sugar foods.', 'avoid tobacco and alcohol.', 'gargle with salt water.', 'eat ice, ice pops, sherbet, or other cold foods.', 'take a pain medication, such as acetaminophen (Tylenol)', 'avoid squeezing or picking at the sores or blisters.']