Nail deformation may be caused by trauma, malnutrition, fungal infection, etc. Different treatments are needed according to different causes. 1. Trauma: When the root of the nail is hit in daily life, it may lead to poor local blood circulation and nail deformation, it is recommended to go to the hospital in time for examination and remove all the necrotic nail surface under the guidance of the doctor. 2. Malnutrition: in daily diet, do not pay attention to nutritional balance, may lead to the body lack of trace elements and vitamins, thus appearing nail deformation phenomenon, generally can be balanced nutrition to alleviate the symptoms. 3. Fungal infection: patients in daily life, do not pay attention to personal hygiene, resulting in fungal infection, if not treated in time, may lead to fungal erosion of keratin, ulceration, and accompanied by nail deformation phenomenon. Patients can take terbinafine hydrochloride tablets and topical ketoconazole cream and other drugs for treatment under the guidance of doctors. Once the patient has nail deformation, it is recommended to go to the hospital in time for examination, and choose the appropriate treatment according to the actual situation under the guidance of the doctor.