2 doctors weighed in:

Cold sore like yellow blisters behind ears - painful & burning - usually get outbreak once a year - can I used cold sore cream to treat?

2 doctors weighed in
Dr. John Leander Po
Internal Medicine - Infectious Disease
1 doctor agrees

In brief: Have it evaluated

Is it one one side or both? If it's only on one side, It sounds more like shingles- cold sore cream won't likely help because it may extend over a larger swath of skin.
Acyclovir is prescribed, to minimize the problem of chronic pain on the affected skin.

In brief: Have it evaluated

Is it one one side or both? If it's only on one side, It sounds more like shingles- cold sore cream won't likely help because it may extend over a larger swath of skin.
Acyclovir is prescribed, to minimize the problem of chronic pain on the affected skin.
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