Thickened and raised nails may be caused by nail malnutrition, fungal infections, subnail warts and other diseases. It is recommended to pay attention to nutritional supplements, go to the hospital for examination, give targeted antifungal drugs, if necessary, through physical therapy treatment. 1. Nail malnutrition: frequent partiality and picky eating, resulting in malnutrition of the organism, may have an impact on the growth of the nails, resulting in a number of nails become thicker and bulging. It is recommended to avoid contact with alkaline detergents, pay attention to dietary supplementation, and give multivitamins under the guidance of a doctor to improve malnutrition. 2. Fungal infection: Having direct or indirect contact with patients with fungal infection, nails are infected by fungus causing onychomycosis, resulting in changes in nail color and texture. You can give amorolfine application under doctor’s guidance, if necessary, with oral itraconazole, terbinafine hydrochloride and other antifungal drugs treatment. 3. Subungual warts: Subungual warts are related to human papillomavirus infection, resulting in thickened and bulging nails. It is recommended to go to the hospital, and if necessary, the warts can be removed through laser and liquid nitrogen freezing treatment. There may be other reasons for the thickening and bulging of the nails, so it is recommended that you do not self-medicate, but go to the hospital for a timely examination, and be given the appropriate medication under the guidance of the doctor.