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