Meclizine and probanthine to help dry out the ear have not helped overcome the motion intolerance symptoms. Also, I have not been able to drive and still experience motion symptoms as a passenger. This condition is preventing me from working. First of all, vertigo is a symptom, not a diagnosis. Vertigo is the term used to describe dizziness that is associated with some sensation of movement - typically a sense of whirling or spinning.
Labyrinthitis is a condition which affects the inner ear and causes vertigo.
Suffice it to say though that labyrinthitis does not last for 6 months. The acute and most severe symptoms of labyrinthitis usually last for 1-3 days. These are followed by less severe symptoms that may last for 4-6 weeks. The acute phase symptoms are usually fairly abrupt and severe, typically associated with nausea and vomiting or in other words, fairly incapacitating symptoms. Your description of the symptoms you have experienced as well as the length of time they have lasted, is not consistent with a diagnosis of labyrinthitis.