Proctitis is diagnosed and treated by the GI Division of Premier Medical Group. Proctitis is an inflammation of your anus and lining of your rectum. Typically the inflammation only affects the last 6 inches of the rectum and the symptoms can greatly vary. Proctitis can last a short time or become a chronic condition (last for weeks or months or longer). The condition can be uncomfortable, even painful, and can lead to bleeding or mucous discharge.