Elderly people with particularly thick toenails may be caused by nail fungus disease, lichen planus, psoriasis, etc., and need to take medication, surgical treatment and physical therapy according to the cause of the disease. 1. Nail fungus disease: the elderly will have nail fungus disease with particularly thick toenails, this time the patient can use itraconazole, terbinafine and other antifungal drugs under the guidance of the doctor. 2. lichen planus: lichen planus can also lead to particularly thick toenails in the elderly, it is recommended that the patient can be used externally halometasone ointment and other glucocorticoid ointment. 3. Psoriasis: If psoriasis leads to particularly thick toenails in the elderly, it is necessary to follow the doctor’s advice to use avitamin A and other treatments. Can also be used externally halomethasone ointment. It is recommended that the elderly toenails especially thick need to take the elderly to the doctor in time, the doctor will be in a clear cause after the selection of targeted measures for treatment.