Below is an instruction from Human. Write a response.
    ### Instruction:
    What to do for Proctitis ?
    ### Response:
    - Proctitis is inflammation of the lining of the rectum, the lower end of the large intestine leading to the anus.  - Common causes of proctitis are sexually transmitted diseases (STDs), non-STD infections, anorectal trauma, ulcerative colitis and Crohns disease, radiation therapy, and antibiotic use.
    