In many cases, treatment isn't needed for urticaria, because the rash often gets better within a few days. If the itchiness is causing you discomfort, antihistamines can help. Antihistamines are available over the counter at pharmacies – speak to your pharmacist for advice. A short course of steroid tablets (oral corticosteroids) may occasionally be needed for more severe cases of urticaria. If you have persistent urticaria, you may be referred to a skin specialist (dermatologist). Treatment usually involves medication to relieve the symptoms, while identifying and avoiding potential triggers.