Toenails don’t suddenly “go bad” out of spite; they slowly change as the body changes. With age, keratin production drops and the nail matrix weakens, so nails grow slower, thicker, and more brittle. Genetics can make them curve more dramatically, while years of tight shoes and repetitive pressure gradually force them downward into the skin. Medical conditions such as arthritis, poor circulation, diabetes, and fungal infections can twist, thicken, or discolor nails, turning simple curvature into painful pincer or ingrown nails.
You’re not powerless, though. Trimming nails straight across, moisturizing regularly, and choosing roomy, supportive footwear can ease pressure and prevent nails from digging in. Watching for redness, swelling, or sudden shape changes is crucial, especially if you have diabetes. When pain persists or infection appears, a podiatrist can thin, reshape, brace, or even partially remove the nail, often restoring comfort and preventing far more serious complications.