title: Acute nasal sinusitis.
mesh_terms: D000208:Acute Disease; D003937:Diagnosis, Differential; D006261:Headache / Q000209:etiology*; D006801:Humans; D009297:Nasal Mucosa / Q000473:pathology; D009298:Nasal Polyps / Q000150:complications; D009300:Nasal Septum / Q000002:abnormalities; D000857:Olfaction Disorders / Q000209:etiology; D010256:Paranasal Sinuses / Q000473:pathology; D010482:Periapical Abscess / Q000150:complications; D012141:Respiratory Tract Infections / Q000150:complications; D012852:Sinusitis / Q000150:complications* / Q000175:diagnosis / Q000209:etiology / Q000473:pathology / Q000628:therapy; D014420:Turbinates / Q000002:abnormalities; D014653:Vascular Headaches / Q000175:diagnosis