The balance system is a very difficult one to diagnose properly but if you describe your symptoms in detail I can tell you whether it sounds more like classic BPPV or Meniere's? As already mentioned, labyrinthitis, vestibular migraine and many other illnesses can cause vestibular disturbances. A classic Benign Paroxysmal Positional Vertigo is just that, positional. It will classically occur every time you put your head into a certain position, for example looking to the back left. The episodes of dizziness will also classically only last a few seconds. This may occur following some head trauma such as a car accident or fall because the impact can dislodge the otoconia. Meniere's is, in my experience, a word too often thrown around and incorrectly diagnosed. A classic Meniere's will last hours to days each time and generally has a corresponding low frequency hearing loss, most commonly unilateral. Unfortunately as I mentioned, every clinical presentation and each patient will be slightly different! A vestibular audiologist can do a test called Electrocochleography (ECoG) that can aid in the Meniere's diagnosis, along with a comprehensive battery of other balance tests that may shed some light on your situation. Hope that helps a little!