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Fever Blisters


Symptoms & Signs

What are the signs and symptoms of the condition?

Someone with an active oral herpes infection may have the following symptoms:

  • difficulty eating
  • fatigue
  • fever
  • malaise, or a vague feeling of illness
  • sore throat
  • swelling and redness, usually both before and during an outbreak
  • tiny blisters that grow into larger sores in the mouth, on the tongue, or on the lips

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