i stood in line for event for 3. 5 hours and then later walked quite a bit. my back was so sore that i couldn't even move the whole of it 5%. i came back home took my opiate pain medication muscle relaxers; and went to bed. as i lay there in absolute pain i had a fever come on. it was low grade but a fever nonetheless. my guess here is the body is so overcome by the stress it goes into a virtual state of shock.
can pain cause a fever. 49y/o male croniccopd gerds cronic pancreatitis arthritis bursitis on a long acting opiot pain reliever. drove 325 miles to see dr. got home and had 102 fever.