My mother is having tension headache.Last year got all the tests and scans done,and doctors suggested to do yoga along with some medications. From last one month,she is having severe headache.The pain is sometimes healed when the pressure point for brain is pressed(on the hand). 2 days back,she developed a slight fever-99.3,and is  feeling a lot of weakness. Should she get the tests done again?Is this common behaviour among people with tension headache? Pls suggest. Thankyou