Nails become hard, may be a normal physiological phenomenon, may also be caused by fungal infection.
1. Physiological phenomenon: If the patient only shows that the nails become hard, not accompanied by other abnormal reactions, and the surface of the nails is glossy, flesh-colored or light pink, without symptoms such as nail splitting and layering, it may be a normal physiological phenomenon.
2. Fungal infection: If the nails are infected by fungus, it will lead to a series of changes in the nails. Nails will become thicker and harder, and in severe cases, the whole nail will become dry, fragile, layered, broken, nail flesh separation, etc. In addition, the color of the nails will also change, and may be yellow, yellow-gray or off-white.
In addition, the hardening of nails may also be associated with thyroid and respiratory diseases. If there are obvious abnormal changes in the nails, it is recommended that the patient pay attention to regular observation and go to the relevant departments of the hospital in a timely manner if necessary, in order to clarify the cause.