Can nasal polyps or deviated septum cause asthma. no aspirin allergy and no family history of asthma but do have asthmatic symptoms

Not causative: Neither a deviated septum nor nasal polyps will cause asthma, but these are all symptoms of allergy in someone your age. Your long term outcome will be best with a thorough evaluation and treatment by an allergist.

No: A deviated septum does not cause asthma but it can also cause trouble breathing.

Yes and No: Nasal polyps typicaly are associated with chronic sinus disease and there is a significantly increased risk of asthma in this population. A deviated nasal septum should not place one at increased risk of asthma.

Nasal polyps can: Although you are young to have asthma caused by nasal polyps, the two conditions are often associated. A deviated septum is not related directly to asthma. I would recommend you see an allergist for a more specific cause of your asthma. And if the nasal polyps are symptomatic, see an ENT physician.