 [ Symptoms ] my 2 yr old has had a fever on and off the last 2 weeks why does it keep coming back  he had a fever 2 3 days then it went away and about a week and a half later it came back and hes had it off and on for 3 days now i have been giving him medicine and it temporarily breaks the fever but then it comes back he has a dr appt tomorrow but what could be the cause for the reoccuring fever [ Disease ] nop it us not ms this is probably nerve root entrapment in cervical vertebra caused by disc lesions or spondilosis you will need an mri on cervical vertebra to confirmgood luck