Diseases
cold sore
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Overview
Cold sores — also called fever blisters — are a common viral infection. They are tiny, fluid-filled blisters on and around your lips. These blisters are often grouped together in patches. After the blisters break, a scab forms that can last several days.
Symptoms
- tingling and itching.
- blisters
- oozing and crusting.
Causes
- cold sores are caused by certain strains of the herpes simplex virus (hsv). hsv-1 usually causes cold sores. hsv-2 is usually responsible for genital herpes.
Risk factors
- atopic dermatitis (eczema)
- cancer chemotherapy
- hiv/aids
Diagnosis
- physical exam.
- signs and symptoms.
Medicines used
Frequently asked questions
What is cold sore?
Cold sores — also called fever blisters — are a common viral infection. They are tiny, fluid-filled blisters on and around your lips. These blisters are often grouped together in patches. After the blisters break, a scab forms that can last several days.
What are the symptoms of cold sore?
tingling and itching., blisters, oozing and crusting.
What causes cold sore?
cold sores are caused by certain strains of the herpes simplex virus (hsv). hsv-1 usually causes cold sores. hsv-2 is usually responsible for genital herpes.
Which medicines are used for cold sore?
docosanol
Full monographs, dosing and an interaction checker in the MediHelp app
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