The Idaho Department of Health and Welfare has activated crisis standards of care in the Southwest, Central and South Central health districts. St. Luke’s is open and available to see patients, but you may experience delays at our ERs, hospitals and clinics. We appreciate your patience. Access info on COVID tests, vaccines, visitor policy, hospitalization data, and FAQs.
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Cold sores, sometimes called fever blisters, are groups of small blisters on the lip and around the mouth. The skin around the blisters is often red, swollen, and sore. The blisters may break open, leak a clear fluid, and then scab over after a few days. They usually heal in 7 to 10 days.
Cold sores are most contagious until the blisters are completely healed.
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