R83-R89: Abnormal findings on examination of other body fluids, substances and tissues, without diagnosis

R83: Abnormal findings in cerebrospinal fluid

The group of conditions classified under "Abnormal findings in cerebrospinal fluid" pertains to any anomalies detected in the cerebrospinal fluid (CSF) - a clear, colorless body fluid found in the brain and spinal cord. These abnormalities indicate underlying illnesses, such as infections, inflammatory diseases, or tumors. For instance, an elevated white blood cell count in the CSF could signify an infection like meningitis. High protein levels might point towards conditions like multiple sclerosis or Guillain-Barré syndrome. Additionally, the presence of certain chemicals or cells can suggest brain tumors. Symptoms associated with these anomalies depend on the underlying condition, but common ones include headache, fever, neck stiffness, or neurological problems like seizures or a decline in cognitive function. These conditions are not contagious but stem from different causes like bacterial/viral infections or auto-immune processes. The progression of these diseases will also vary depending on the root condition.