Had lightheadedness on standing since i was a kid-had checked, all ok.today had lh then ear ringing, fullness and pressure for about a min. worrisome?

Low probability: Was the ear ringing and pressure one ear, or both? Any nausea? If one ear might have higher liklihood of defined cause. With single spell relatively low probability of finding a cause with this symptom complex. A hearing and balance center can do tests to look for objective evidence of problem - which greatly helps diagnostic pursuits.