White powder inside the nails is generally a fungal infection caused by onychomycosis.
Nail fungus is caused by fungal infections such as dermatophytes, mainly manifested as cloudy nail plate, thickening or brittle, discoloration, etc. After the fungal infection of the nail plate, the keratinase enzyme can destroy the keratin in the nail plate, resulting in the production of white powder.
Patients with onychomycosis can use tools to grind the nail thin, and then apply topical antifungal medication, commonly used medications are amorolfine application, cyclopiazepoxide coating, oral itraconazole, terbinafine, and if necessary, surgical nail extraction treatment can be carried out on the basis of local anesthesia.
White powder in the nails, it is recommended to go to the hospital in time, under the guidance of the doctor for active treatment. Drugs need to be used in accordance with medical advice.