Have suffered chronic sinusitis and eustacian tube dysfunction for a few years, and now has developed into labyrinthitis which has meant I cannot continue studies for a while. My GP has been reluctant to give official diagnosis, but should I have been reffered to the Ear Nose Throat specialist? Main question Can antibiotics treat this? I was on tetralysal for a few months as a teenager for acne and noticed sinus problems improved during. Would they be taken for one period or indefinately?