Itchy Skin Most often, itchy skin is just a matter of dryness or related to a skin condition such as eczema. Still, some underlying illnesses can also cause itchy skin, says New York City cosmetic dermatologist Sejal Shah, founder of Smarter Skin Dermatology. "Conditions that can cause itchy skin are varied and include liver diseases, kidney failure, iron deficiency anemia, thyroid disease and even some cancers," she says. A scary thought, yes, but there's no need to panic. The point is that if you can't stop itching, no matter what, it's worth seeing your doctor.
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