Blocked Nose (Nasal Congestion): Or something else? Differential Diagnosis
Congenital malformations, deformities, and chromosomal abnormalities (Q00-Q99). Choanal atresia, unilateral (unilateral) – congenital absence of the posterior nasal opening (= congenital membranous or bony closure of the posterior nasal opening); unilateral choanal atresia, in contrast to bilateral, is often not discovered immediately after birth but later in childhood; clinical symptoms: chronic rhinorrhea (runny nose) Meningo-/encephaloceles … Blocked Nose (Nasal Congestion): Or something else? Differential Diagnosis