Celeste has itchy red patches of skin that have a dry, scaly surface. What is most likely the cause of her dermatitis?

Itchy red patches with a dry, scaly surface are characteristic of psoriasis, a skin condition that causes inflamed, flaky plaques. Acne causes pimples, while melanoma and basal cell carcinoma are types of skin cancer and do not typically cause this pattern of dermatitis.

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