This is Dr Basu, experienced Internal Medicine Specialist.
I am here to address your concerns and provide great service.
Rectal tenderness can be due to the inflammation called proctitis.
However fever also present besides worsening pain.
Flett's enema also can cause rectal pain.
Another possibility can be bowel obstruction.
Your husband can try miralax and bisacodyl 2 tablets together --both over the counter.
If no bowel movement by tomorrow, then he should go to the ER.
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