 [ Symptoms ] can pain cause a fever 49yo 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 [ Disease ] i stood in line for event for 3 5 hours and then later walked quite a bit my back was so sore that i could not 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