Sometimes pain killers can cause constipation, but judging by his behavior I'm betting it's the anal glands.
Not exact matches
Women with endometriosis often struggle with awful menstrual cramping that
sometimes won't even go away with NSAIDS (a group of common
pain killers, like Motrin and ibuprofen).
We routinely give prednisone (a type of cortisone) for the inflammation, and
sometimes find it necessary to give a
pain -
killer like Tramadol short term.