Many conditions can cause dizziness and vertigo. Your GP will usually diagnose labyrinthitis based on your symptoms, your medical history and a physical examination. Your GP may carry out the following tests: a physical examination – you may be asked to move your head or body and your ears will be checked for signs of inflammation and infection hearing tests – labyrinthitis is more likely if you have hearing loss Your GP will also check your eyes. If they are flickering uncontrollably, it is usually a sign that your vestibular system (the body's balancing system) is not working properly.