"C0149516"^^ . "C35151"^^ . "Chronic_Sinusitis"^^ . . "Disease or Syndrome"^^ . . "Chronic Sinusitis"^^ . "Chronic Sinusitis"^^ . "Chronic SinusitisPTNCI" . "Inflammation of the paranasal sinuses that typically lasts beyond eight weeks. It is caused by infections, allergies, and the presence of sinus polyps or deviated septum. Signs and symptoms include headache, nasal discharge, swelling in the face, dizziness, and breathing difficulties.NCI" .