Maintenance of remission in ulcerative colitis with 5-amino salicylic acid in high doses by mouth.

range= 40-100 IU/1) respectively.Tests for hepatitis B surface antigen were negative.Ultrasonography of liver and gall bladder was normal.Anaphylactoid purpura was diagnosed and treatment with intravenous hydrocortisone 100 mg four times daily started.Respiratory and abdominal symptoms resolved completely within 18 hours.The patient was discharged home nine days later taking a gradually decreasing dose of prednisolone.He remained well six weeks later and steroid treatment was stopped.All haematological and biochemical indices were within normal limits.