Hi . Sorry your boyfriend is experiencing this, but glad he has you for support and to seek out information. I did not find anything saying that proctitis could only occur during treatment. In fact, I want to share with you this description of the two types of proctitis: "Radiation proctitis has been subdivided into two different phases depending on timing of the symptoms. Acute proctitis occurs during or within 3 months of radiation therapy and is usually transient and self-limiting; patients have diarrhea, urgency, and tenesmus, in general without rectal bleeding. Chronic proctitis either continues from the acute phase or begins after a latent period of at least 90 days, and symptoms include rectal bleeding that can progress to intestinal obstruction from stricture and sepsis" (see the first item on this page of proctitis research articles: https://www.sciencedirect.com/topics/medicine-and-dentistry/radiation-proctitis). Your boyfriend shouldn't hesitate to get a second opinion if his concerns are not being heard. Please feel free to keep us posted on how things are going. Best, Richard (ProstateCancer.net Team)