osteoporosis
"After two shots, had swelling in both elbows, stiff neck and pain.   I am not sure prolia is the cause but I will not risk it again or any drugs for osteoporosis.   My immune system was compromised too and I have had several illnesses.   I went from an active fit person to  not being able to perform simple everyday tasks without big pain.   I have had the worst 6 months of my life.  Avoid this medication!"