What causes rectal inflammation and anal heaviness?

The main causes of anal heaviness due to proctitis are as follows: 1. Inflammatory stimulation: Direct inflammation affecting the rectum and anal canal may cause a sensation of anal heaviness. Particularly when the inflammatory stimulation is severe, patients may also experience symptoms such as mucoid stools or pus and blood in the stool. 2. Infectious factors: Bacterial infections, such as those caused by *Shigella* species, are common causes of proctitis. These infections can damage the rectal mucosa and lead to a feeling of anal heaviness. 3. Other etiologies: Proctitis may also be associated with other conditions such as hemorrhoids, perianal abscesses, and anal sinusitis, all of which can indirectly cause anal heaviness.