A cutting-edge review of the fundamental biological principles underlying the more common inflammatory disorders of the nervous system. The authors provide extensive updates on the latest findings concerning the mechanisms of inflammation and introduce such new concepts and methodologies as "endothelial and leukocyte microparticles" and "gene microarray technology" to help explain important links between the central nervous system (CNS) and general inflammatory processes. Among the diseases examined from an inflammatory perspective are multiple sclerosis, acute disseminated encephalomyelitis, optic neuritis, transverse myelitis, CNS vasculitis, neuropsychiatric systemic lupus erythematosis, Alzheimer's disease, and Parkinson's disease. The role of the immune system in neuroinflammation is also explored in such disorders as neurosarcoidois, HIV-Associated dementia, and HTLV-associated neurological disorders.