This is a picture of ringworm, tinea manum, on the finger. This fungal infection is inflamed and scaly.
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Tinea manuum
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Tinea Manuum: Causes, Symptoms, and Treatment
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Tinea Manuum: Types, Symptoms, Causes, Diagnosis, Treatment
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Tinea Manuum: Causes, Symptoms, and More
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Tinea Manuum: Causes, Symptoms, and More
Tinea Manuum: Symptoms, Causes, Treatment, and More
Tinea Manuum: Symptoms, Causes, Treatment, and More