When the fingernail is separated from the flesh, it may be caused by factors such as malnutrition and onychomycosis, and patients are advised to consult a doctor for examination in time, and are usually treated with medication. 1. malnutrition: in daily life for a long time lack of micronutrients such as calcium, vitamins and other nutrients may lead to natural separation of the nail surface, the phenomenon of separation of fingernails and flesh, you can take calcium gluconate tablets, lysine calcium phosphate tablets, multivitamin tablets, and other medications to alleviate the symptoms. 2. Nail fungus: nail lesions occurring due to dermatophyte infection of the nail plate and nail bed, if left untreated, the phenomenon of separation of the fingernail from the flesh may occur. You need to use drugs such as amorolfine and cycloheximide for treatment under the guidance of a doctor, and for patients who are not satisfied with the effect of external drug treatment, you can take oral drug treatment such as itraconazole and terbinafine, or surgical methods such as nail removal. When the fingernail is separated from the flesh, it should be examined by a doctor in time, to avoid delaying the condition, infection and other discomforts, which will affect the recovery of the condition. Medications should be used as prescribed by the doctor.