Thickened nails are a condition where the nails become unusually dense, hard, and may change in shape. This issue can result from a variety of factors, ranging from general health conditions to improper nail care. In some cases, thickened nails are simply a part of the natural aging process, while in others they may indicate an underlying condition that requires medical attention. Common causes of nail thickening include fungal infections, mechanical trauma, nail psoriasis, poor circulation, diabetes, and deficiencies in essential vitamins and minerals. Symptoms may include increased nail thickness, distortion in shape, dullness, brittleness, and discoloration such as yellowing or graying of the nail plate. If you notice any of these changes, it’s important to consult a specialist who can diagnose the underlying cause and recommend an appropriate treatment plan tailored to your needs.