It can produce anal swelling.
Prostatitis makes the prostate and other parts of the body overly congested, leading to the appearance of an enlarged male prostate, which stimulates the sensory nerve endings and pelvic floor nerves that trigger defecation, producing a feeling of anal cramping.
The anal swelling will gradually ease as treatment for prostatitis proceeds, but if this symptom persists, attention needs to be paid to the possibility of other problems, and diseases of the anorectal system should be considered first.