Matching Pairs 4.18 Diseases of the Nervous System Online version Some diseases of the Nervous System by Jorge Arizpe 1 Parkinson: Lack of coordination and tremors. Death of the cells the the substantia nigra 2 Epilepsy: appearance of abnormal electric activity in the brain 3 Multiple sclerosis: destruction of the myelin sheath. 4 Encephalitis: brain inflamation. It can be caused by a virues 5 Anxiety: Mental disorder characterized by a lot of concern and insecurity 6 Brain tumor: abnormal cell growth 7 It is a synonym of headache 8 Meningitis: infection in the meninges 9 Depression: mental disorder characterized by sadness. 10 Poliomyelitis: virus that atacts the bone marrow and provoques muscular athrophy and paralysis.