I have had deviated septum for long time, saw my ent few months back, but since then it feels one nostril where septum deviated to ( left side), has been blocked. he did not see anything else then, but i wonder why it may be getting worse.61yrs?

These bony structures are lined by layers of mucus membrane cells that can swell from irritant or allergic stimulation. This swelling can easily decrease the available air movement on either side of the nose. The membranes also create mucus secretions than can be either thick or thin. The thicker secretions on a swollen membrane can block either or both nasal passages, septal deviation or not.