The causes of headache in diseases of the ear, nose and throat.
D004194:Disease; D004427:Ear Diseases; D006261:Headache / Q000209:etiology*; D009668:Nose Diseases; D010608:Pharyngeal Diseases; D010614:Pharynx
EAR/diseases; HEADACHE/etiology and pathogenesis; NOSE/diseases; THROAT/diseases