Ringworm, also known as nail fungal disease, commonly known as “gray nails”, is a class of chronic skin diseases caused by fungal infection, infectious. The onset of ringworm often due to other parts of the body such as tinea pedis, tinea corporis spread, can also be infected at the beginning of the nail plate; “gray nails” is a common disease, more frequent, more stubborn, affecting the aesthetic. Clinical characteristics: 1, the prevalence in developing countries accounted for about 3% of the population. 2, the prevalence of toenails, toenails, toenails, toenails, toenails. The prevalence of toenail is 4 times of that of fingernail. 3, mainly manifested as finger (toe) deck thickening, gloss disappearance, discoloration, deformation or deck destruction. 4.It is contagious, once suffering from onychomycosis, if not actively treating often years not cured, more and more, and may be infected to other people. 5, ringworm of the nail not only hinders the beauty, but also may be secondary to onychomycosis, ingrown nails, etc., affecting the life and work, so it should be treated as soon as possible. Treatment: Some people think that onychomycosis (gray nails) can not be cured, this view is not right, onychomycosis can be completely cured, the key lies in the clear diagnosis after insisting on the use of medication. 1, topical drugs: if the number of affected decks is less and the lesions are lighter, the distal end of the nail is involved, the root of the nail is normal, you can apply some antifungal topical drugs such as 3% miconazole tincture, 30% glacial acetic acid, cyclopiazonic acid nail coating, etc.. 2, oral medication: such as more than one finger (toe) nail involvement, and the nail plate lesions, nail root involvement, can be taken under the guidance of a doctor antifungal drugs such as terbinafine hydrochloride or itraconazole, these drugs have the advantages of safety, mild adverse reactions, efficacy is certain. Third, prevention: 1, the treatment of onychomycosis at the same time must pay attention to the cure of other parts of the ringworm, so that onychomycosis cure is hopeful, otherwise it will also be infected with each other. 2, home should pay attention to prevent mutual infection. Reminder: nail disease ≠ ringworm of the nail, half of the nail disease is not ringworm of the nail, the appearance of nail damage should go to the hospital to confirm the diagnosis before treatment, otherwise, it will lead to misdiagnosis and misdiagnosis and prolonged not cured.