I have positional pulsitive tinnitus with headpain i'm scheduled for an ir lumbar puncture. if not symptomatic at time of lp am i wasting my time?

My understanding: is that lumbar puncture may sometimes be helpful for both diagnostic reasons as well as therapeutic in idiopathic intracranial hypertension a symptom of which may be pulsatile tinnitus. In some cases the relieving of pressure during the LP improves, at least transiently, the symptoms. I wouldn't think you would have to be having symptoms for it to work, but if no symptoms then, how will you know?