Headaches caused by nasal obstruction.
D003731:Dental Caries; D005547:Foreign Bodies; D006261:Headache / Q000209:etiology*; D006801:Humans; D009296:Nasal Cavity; D015508:Nasal Obstruction; D009666:Nose
FOREIGN BODIES; HEADACHE/etiology and pathogenesis; NASAL CAVITY/foreign bodies