Hi. Thanks for your query and an elucidate history. Levothyroxin has nothing to do with this condition unless thyroid function is abnormal. It seems that the past infection never settled completely. I would advise such a patient::: *High resolution T scan of the sinuses. * collect the sample of the discharge for gram staining, culture and sensitivity test ( will help us in near future to alter the therapy if need be). *Broad spectrum antibiotics and anti-inflammatory medicines, oral decongestant and topical one as nasal drops or spray *Bed rest. *Steam inhalations All this management will help to solve the present problem. The medicines should be given for at least 3 weeks. If the CT scan is suggestive of an organic pathology and surgery if there is a need. This is going to be bit difficult but you can be cured of the problems. forever. Otherwise this will become a chronic/ recurrent affair and very difficult to treat at a later stage.