<prompt> All of the following are red flag signs of back pain except -Previous history of malignancyPrevious history of steroid useSaddle anaesthsiaAge between 35-50  <response>: Answer- D. Age between 35-50FeaturesPrevious history malignancy however Iong agoAge 16 or 50 with NEW onset painWeight loss unexplainedPrevious longstanding steroid useRecent serious illnessRecent significant infectionSignsSaddle anaesthesiaReduced anal toneHip or knee weakness 