Concave nails may be caused by trauma, onychomycosis, iron deficiency anemia and other factors.
1. Trauma: if the patient’s nails are smashed by heavy objects or squeezed, this will lead to damage to the nail plate and nail bed, which will cause the symptoms of dented nails.
2. Nail fungus: if the patient’s nails are infected by Trichophyton rubrum and Trichophyton mustelii, these dermatophytes will invade the nail plate and release all kinds of enzymes to decompose the nail plate, leading to the destruction of the nail plate, thus triggering the patient to have the symptom of dented nails.
3. Iron deficiency anemia: If the patient has iron deficiency anemia, it will cause the nails to lose the nourishment of nutrients, which will make the nails thin, brittle, etc., and seriously cause the patient to have spatulate nails, which will lead to the symptom of concave nails.
There are many causes of dented nails, patients need to go to the hospital for examination to identify the cause of the disease and treat the symptoms.