A stone-like deposit or calcification that forms within or on the skin.
From Greek 'derma' (skin) + 'lithos' (stone), literally 'skin stone.' Medical terminology frequently combines '-lith' (stone) with body parts to describe calcified or hardened deposits.
Dermalith is a perfect example of how Greek medical terms work like building blocks—once you know 'lith' means stone, you understand kidney stones (nephroliths), gallstones (cholelith), and skin stones (dermaliths) instantly.
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