My son has a blister like
fungus that keeps re-occurring on his fingers. It usually begins like a blood blister, on the palm side and between the joints of his fingers. Within a few days, it will be increasingly more blistered like, begin to swell and look like a fever blister that would appear on a person's lip. He does get the herpes type fever blisters on his lips occassionally, but can be treated with Abreva.