My husband who is generally in good health, age of 77, has been suffering from serious back pain in the last few days.  He is mostly only in bed.  SInce he has ongoing back issues that sometimes flare up and then subside, I am not sure how seriously to take this,  He has never had this level of ongoing pain and feeling sick before.  He does not have a temperature, but feels somewhat nauseous, burps, and has various other aches and pain.  I was wondering if he had a good case of the grippe (flu), but do not know if there could be something more serious that might need attention.
Hello, Thanks for writing to unit could be due to flu, but there is also possibility of osteoporosis, degenerative changes or some malignant pathology according to his age and severity of symptoms. A detailed clinical examination along with appropriate investigations are needed to establish a diagnosis. I do hope that you have found something helpful, and I will be glad to answer any further query.