How long does colitis last?

Colitis: By your question, were you told you have Colitis? If so, what kind? Recovery depends on the cause. If by infection, depends on response to the medication, if not then I would follow up with a Gastroenterologist as you may need further testing and or treatment

It depends...: ...on the cause. Some types are lifelong. Your doctor can advise you on whether and what type you may have and what to expect in the future.