Fever blister cream
A fever blister is a cold sore on or around the lip; treatment depends on its stage and your health history.
The short answer
Fever-blister creams may reduce symptoms or shorten the active episode when used as directed, especially early after tingling begins.
What causes a fever blister near the lip?
A fever blister is usually a cluster of fluid-filled lesions caused by herpes simplex virus near the lip. It is different from a canker sore, which occurs on movable tissue inside the mouth.
How should you apply topical medicine to a fever blister?
Use a clean fingertip or applicator for any labeled topical medicine, avoid picking the crust, and wash hands after touching the area. Keep the sore covered when practical and avoid kissing or sharing utensils while it is active.
When does a fever blister need professional assessment?
Seek care if the sore involves the eye, spreads widely, lasts longer than expected, recurs often, or occurs with severe illness or a weakened immune system.
What treatment suits the lesion on your lip or in your mouth?
Is this lesion on the lip or inside the mouth, and would an antiviral cream or another treatment fit its appearance?
Frequently asked questions
Can home care replace an examination?
Home care can reduce plaque and irritation, but it cannot diagnose or treat decay, calculus, infection, or damaged dental materials.
What will happen at the appointment?
The clinician will review your symptoms, examine the relevant teeth and gums, and use imaging or clinical tests when those findings require them.
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Who wrote this page
This library is published by Dental Nation, a licensed dental group practising in the United Arab Emirates. Pages are written and overseen by the same clinical team that treats patients in our clinics, and are held to a fixed editorial standard for safety and accuracy.
This page is patient education, not medical advice, and cannot replace an examination. Anything urgent — facial swelling, trauma, uncontrolled bleeding or severe pain — needs a dentist or emergency care now.