Hello, I have studied your case with diligence. As per your history there is possibility of polyarthritis. Rheumatoid arthritis may involve small joints and early morning stiffness in joints, does she have such complain? Ankylosing spondylitis typically involve spine and hips with other large joint also. There is reduced chest function in this disease. Stiffness in spine is increased does she have such stiffness in spine? Harmone imbalance like hypothyroidism also leads to similar complain.so check your thyroid profile. Cushing disease can occur due to steroid supplement. Steroids can lead to peptic ulcer,osteoporosis,avascular necrosis of bones. You need proper clinical examination and medication accordingly So do not take medrol without consultation. You can consult at orthopaedic department at yashoda hospital. Hope this answers your query. If you have additional questions or follow up queries then please do not hesitate in writing to us. I will be happy to answer your queries. Wishing you good health. Take care