We detected cerebrospinal fluid (CSF) alterations in 56% of depressive syndromes.
Four percent displayed increased CSF white blood cell (WBC) counts. Oligoclonal bands in the CSF were detected in 6.5%.
Forty six percent had increased protein concentrations, and 19.4% had pathological albumin quotients.
Suicidal tendencies correlated with an increased WBC count.
More research is necessary in better controlled conditions.