###Human: Why do I have joint pain and low back pain? ###Assistant: Hi. Vitamin D deficiency and autoimmune cause. Ultrasound abdomen and pelvis, rheumatoid factor, MRI of spine with sacroiliac joint and MRI of the whole spine, screening and ultrasound of hands to look for active arthritis, HBsAg (hepatitis B surface antigen) and HCV (hepatitis C virus). Seronegative spondyloarthropathy. 1. Rheumatoid arthritis. 2. Seronegative spondyloarthropathy. Calcirol sachets (vitamin D) 60000 units once in a week with a glass of water for six weeks and tablet Dolo 650 mg (Acetaminophen) for pain. 1. Avoid alcohol and excessive weight lifting. 2. Also, try to avoid painkillers as your liver functions are abnormal. For further information consult a rheumatologist online.--->