Q and A: about health and research

Introduction Cerebrospinal fluid (CSF) rhinorrhea is a medical condition in which CSF, the clear fluid that cushions and protects the brain and spinal cord, leaks through the nasal passages. This leakage occurs due to a defect in the skull base and can result from trauma, surgery, congenital abnormalities, or spontaneous causes like elevated intracranial pressure (ICP). Though it may initially seem benign, CSF rhinorrhea can lead to serious complications, including life-threatening infections such as meningitis. This article provides an in-depth look at CSF rhinorrhea and its associated conditions, including elevated CSF protein, hydrocephalus, and idiopathic intracranial hypertension (IIH). Special attention is given to the role of high CSF pressure in auditory symptoms, particularly tinnitus that worsens while lying down—a symptom often linked with IIH. Too much brain fluid. As altitude increases, the balance breaks — pressure builds, and fluid swells, pressing against the delicate...