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Melanonychia What Your Fingernails Say About Your Health What's Good blog Melanonychia: Etiology, Diagnosis, and Treatment PMC Brown nails as clues for shock diagnosis Inaba 2025 Journal of General and Family Medicine Wiley Online Library Nail Changes and Nutrition: What Do We Know Now? Podiatry Today Nail changes can reflect underlying hormonal and metabolic disorders. Features like onycholysis suggest hyperthyroidism, while brittle or slow growing nails point to hypothyroidism. Findings such as koilonychia and thickened nails may indicate systemic
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