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A member asked:
What can cause fever blisters without having a fever?
5 doctors weighed in across 2 answers
Herpes, shingles...: Several things can cause blisters: viral infections (herpes, chickenpox / shingles [varicella], for example), adverse drug effects, insect bites. Talk to your doctor if you are experiencing this condition.
Answered 2/5/2021
3.9k views
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Cold Sores?: Triggers for cold sores can include illness, stress, fatigue, becoming physically cold, dry air, UV rays (sun), mouth trauma or one's period.
Answered 2/5/2021
2.1k views
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