A hardened thickening of skin, such as a corn or callus, especially on the feet.
From Greek 'helos' (nail or sunken spot) + '-oma' (swelling or growth). The term combines the medical observation of sunken corns and the suffix indicating a pathological condition.
Helomas and corns are humanity's painful reminder of our upright posture—our feet bear enormous pressure over lifetimes, and the friction points where shoe meets bone have created one of medicine's most common but underestimated problems.
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