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A member asked:
For six years ive been getting a blistery rash on finger and knee. starts out as pain and itching, then a day or so later a bubbly rash appears. it looks like tapioca pudding. it happens at random. now it just started to appear on the sole of foot?
A doctor has provided 1 answer
Blisters can be caused by many skin and systemic disorders, and location may pinpoint the diagnosis. For small areas, does it follows a specific skin pattern called dermatome? It could be shingles. Grouped, painful, and one is sexually active? Herpes simplex. Hands/Feet? Eczema, friction/sucking blisters, erythema multiforme, epidermolysis bullosa simplex, fungal infection.
Answered 2/25/2022
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