How To Treat Severe Pain In Elbow,groin?

My husband, came to me about 3 hours ago and said he was in horrible pain. He described pain in his elbow, and extremely painful groin area on the same side of body. He has Rheumatoid Arthritis and is on quite a few medications. He does have a radiculopathy in his cervical spine and has the elbow and shoulder pain before. This week, he had a bout with severe shoulder pain on the opposite side, radiating around his entire left shoulder area, almost causing the shoulder to feel locked. We saw our rheumatologist s partner this week who upped his prednisone to 20mg per day for 10 days. She suggested that perhaps we will want to get xrays if he has more symptoms. I know about his elbow pain caused from the ridiculopathy,as it has before. I just am very concerned about this unbearable pain in the groin.