Keep getting fever blisters
Recurring fever blisters are usually cold sores caused by herpes simplex virus, but mouth ulcers and other lesions can look similar.
Are recurring fever blisters usually cold sores?
Recurring fever blisters are usually cold sores caused by herpes simplex virus, but mouth ulcers and other lesions can look similar.
Cold sores often start with tingling, then form grouped blisters on the lip before crusting as the virus reactivates in sensory nerves.
How do cold sores typically develop on the lip?
Cold sores often start with tingling, then form grouped blisters on the lip before crusting as the virus reactivates in sensory nerves.
The relevant anatomy, material, or mechanism determines which explanation fits the symptoms and which treatment can help.
How can you reduce contact while a cold sore is active?
Keep the area clean, wash hands after touching it, and avoid kissing or sharing utensils while active.
Use the product or self-care measure only for its intended purpose, follow its directions, and avoid using it to conceal worsening symptoms.
When does a fever blister need prompt dental care?
Seek care for an eye lesion, severe widespread sores, dehydration, immune suppression, or a lesion that does not heal.
A dental examination can identify the cause and guide cleaning, medication, restoration, appliance care, or referral.
Could this lesion be something other than a cold sore?
Ask whether the lesion is a cold sore or another ulcer and whether antiviral treatment is appropriate.
Ask what finding would change the plan and which warning signs should prompt earlier contact.
Frequently asked questions
Can home care replace an examination?
It may ease symptoms or clean the area, but it cannot diagnose or correct an underlying dental problem.
What should I bring to an appointment?
Bring the product or appliance, a medicine and allergy list, and notes about when the symptom began.
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.