Treatment Treatment is supportive.The usual duration of illness is 6 to 16 weeks.Between 5%and 10%of patients will have persistent or recurrent disease.Antispasmodics antibiotics,and antiinflammatory drugs, including systemic corticosteroids,may be helpful during the course of the disease. which will eventually clear without residua in most cases.Treatment ⚫ Treatment is supportive. The usual duration of illness is 6 to 16 weeks. Between 5% and 10% of patients will have persistent or recurrent disease. Antispasmodics, antibiotics, and antiinflammatory drugs, including systemic corticosteroids, may be helpful during the course of the disease, which will eventually clear without residua in most cases