nasal congestion AE sinus congestion AE HPO: HP_0002257 SS, YH SIDER: C0152029 WEB: http://en.wikipedia.org/wiki/Sinus_%28anatomy%29, http://en.wikipedia.org/wiki/Nasal_congestion sinus congestion AE is a nasal congestion AE that results in blockage of the air cavities in the cranial bones or nasal passages usually due to membranes lining the nose becoming swollen from inflamed blood vessels