### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Hi, I hope you re well. My boyfriend is in severe pain. It s his lower back, and he says it s some of the worst pain he s ever been in. He s also nauseous but the nausea seems to be coming from the pain. Earlier the pain started with a head/neck ache which went away with excedrin and a nap. He felt normal til a few hours ago when the back pain started. No fever but he is freezing and it s not that cold. I just don t know what to do. He s taken one more excedrin and I m keeping heat on his back.

### output:

Hello, I have studied your case. According to your symptoms this looks as acute lumbar muscle sprain in your lower back. Another differential diagnosis can be lumbar disc bulge leading to sudden onset of pain. Intervertebral disc compresses spinal cord and leads to back pain and shoulder pain. Muscle spasm should recover with in 2 weeks, as it has not recovered you may need further investigation. When such patient comes to our hospital we usually do x-ray to rule out any nerve compression. MRI spine will show any disc bulge is there or not. And when muscle sprain is confirmed muscle relaxant, analgesic and neurotrophic medication can be started consulting your doctor. Till time, avoid lifting weights, Sit with support to back. You can consult physiotherapist for help. Physiotherapy like ultrasound and inferential therapy will give quick relief. 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. If you find this answer helpful do not hesitate to rate this answer at end of discussion. Wishing you good health. Take care.