We are open for safe in-person care.
Featured conditions Brain tumor, breast cancer, colon cancer, congenital heart disease, heart arrhythmia. See more conditions.
Featured conditions
Mayo Clinic offers appointments in Arizona, Florida and Minnesota and at Mayo Clinic Health System locations.
Subscribe to Housecall
Our general interest e-newsletter keeps you up to date on a wide variety of health topics.
No one likes cold sores. These tingling, red lip blisters are tough to hide, and sometimes they're slow to heal. You can help prevent them by applying sunblock on your lips and face year-round. Avoid kissing anyone who has a cold sore, and don't share utensils, lip balm, towels or other personal items.
Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission.
Check out these best-sellers and special offers on books and newsletters from Mayo Clinic.