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A 28-year-old woman with no other medical conditions presented with a rash on her hand that she has had for 6 days. When it first appeared, she noted a burning sensation. Initially, she noted more redness, but now the area has become more hyperpigmented. She has no other rashes on her body and no systemic symptoms. She states she is concerned about a fungal infection because 1 week ago, she hosted an outdoor party to celebrate defending her PhD, and she played with her friend’s new dog.

What is the diagnosis?
A. Tinea manuum
B. Fixed drug eruption
C. Phytophotodermatitis
D. Atopic dermatitis
E. Psoriasis

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