Can i have chronic sinusitis without nasal discharge? i feel 'blocked' but mri/x-ray revealed nothing. no allergies, been tested twice.

Yes: Chronic sinusitis can often be manifested by diffuse sinus mucosal thickening and pain/sensation of fullness without any discharge, but no discharge is rare. Ct scan of the sinsuses is the optimal modality for assessing sinus disease, not MRI or x-ray.

Chronic Sinusitis: Greetings. I would recommend an ENT evaluation and a ct scan which is the study of choice to evaluate your sinuses. An immune evaluation may also be in order. Recurrent acute sinusitis could be the cause and a balloon sinuplasty may provide relief. Good luck.