<s>[INST] Hi, I think i injured/sprained/hurt my back somehow. it hurts just at the bottom part of my spine . I think it occured when I was trying to open the garage, and i didnt use the correct posture . ive tried to rest it ever since with continuous deep heat and application of a hot water bottle. There is still a slight bit of pain when I sit in the wrong position or stand for too long. Also now there are red spots appearing on my lowwer back. I am not sure if I should be alarmed or not??? HELP PLEASE!!! [/INST] HiT hank you for asking ChatDoctorI have gone through your query. Your problem is most likely sprain of lumbar (back) muscles. For my patients with such cases if no neurological deficit means I give muscle relaxants like thiocolchicoside NSAIDs like diclofenac and advise rest and ice pack application. Local anti-inflammatory gels also I prescribe for some. In case of neurological deficits or no improvement after this I send for X-ray followed by MRI if required to rule out any disc herniation or crack to spine. Hope this may help you. Let me know if you have any further query. </s>