Medical condition
Onychorrhexis (from the Greek words ὄνυχο- "ónycho-", "nail" and ῥῆξις "rhexis", "bursting"), is a brittleness with breakage of finger or toenails that may result from hypothyroidism, anemia, anorexia nervosa or bulimia, or after oral retinoid therapy. It can also be seen in melanoma that involves the nail and onychomycosis. ;ref name="Frazier AAFP 10/2021" ; ;/ref ;
Onychorrhexis affects up to 20% of the population.
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