Common causes of split toenails include heredity, trauma, onychomycosis, and nail malnutrition.
1. Heredity:Generally, if there is a family with two flaps of small nails, their offspring are also prone to this condition, usually without pain, itching, redness, swelling and other uncomfortable symptoms, without treatment.
2. Trauma: If the toenail is smashed or squeezed by heavy objects and other traumas, it is easy to cause vertical cracking of the toenail and the phenomenon of the nail splitting into two halves.
3. Nail fungus:This disease is mainly caused by dermatophyte infection, the common dermatophyte is Trichophyton rubrum, which can be transmitted through direct contact and indirect contact, and it is easy to lead to nail color change, soft texture, increased thickness, and easy to rupture into two halves.
4. Nail dystrophy: this disease can be caused by genetic factors, certain diseases, drug factors and other factors, often manifested as nail roughness, nail separation, nail longitudinal cracking, nail loss of luster, cracked into two halves and other symptoms.
It is recommended that patients go to the dermatology department of the regular hospital when necessary, after a clear diagnosis, for treatment.