You need to rest and avoid excessive strain. You may take pain killers, try heat or cold therapy. Do gentle stretching exercises and maintain good posture. 

Left arm pain can have various sources, including injury or oversuse and underlying diseases like cardiovascular disorders or arthritis. You should rather seek a medial opinion of an orthopedist to diagnose the source and take care for your pain.

A slight error occurre­d - you injected two medicine­s together. This could irritate, or impact how the­ medicines function. Monitor for redne­ss, swelling, and pain at the injection site­. If any of these symptoms arise, promptly consult a doctor.

Your left hand pain could be linked to a Vitamin D deficiency, as doctors suggest. Common symptoms of this deficiency include body pain, muscle weakness, and bone pain. Vitamin D helps keep our bones strong, and when we don’t have enough, we can feel pain in our muscles and bones. To boost your Vitamin D levels, spend some time in sunlight or take a Vitamin D supplement as advised by your doctor.

A lump on the back and hand could be related to various musculoskeletal or soft tissue issues. Talk to a doctor to assess your symptoms. You may need imaging studies if necessary, and provide a diagnosis and treatment plan based on the findings.

It is not good to fee­l numbness and burning pain in the legs afte­r back surgery. These fe­elings happen because­ the nerves ge­t irritated. This could happen because­ of swelling or pressure on the­ nerves. It is important to tell your surge­on about these fee­lings. The surgeon may give you me­dicine or suggest you to do exe­rcises to feel be­tter.