Is there a cure for nummular eczema?

No, but the disease can be controlled. Limiting baths and soap exposure, avoiding irritants, frequent use of moisturizers, topical corticosteroids, and avoiding dry environments all have a role in treatment. Topical corticosteroids are the mainstay of therapy. With the high rate of staphylococcal colonization, many dermatologists routinely prescribe a 2-week course of oral antibiotics such as trimethoprimsulfamethoxazole, dicloxacillin, or cephalexin. I find 1 mg/kg triamcinolone acetonide mixed with 0.1 mg/kg Celestone intramuscularly particularly helpful, and it causes far fewer side effects than oral steroids that may also be used in severe cases, limited to a tapered 2 to 3 week course. Severe chronic cases may also benefit from PUVA.