NERVOUS DISEASE. An affection of any part of the nervous system, either of the brain, spinal eord, sympathetic nerves, or peri pheral nerves. Diseases of the nervous system are divided into functional and organic. In the latter local anatomical alteration of nerve structure is apparent. There are in reality no such things as functional diseases. While not seen or described, undoubtedly anatomical changes are present in many cases: and in others there are lesions at a distance which constitute the real disease, while the symptoms which oc cupy the attention are the result of reflex action. It cannot be affirmed that there are no structural changes in nerve-fibres in so-called functional dis eases of the nervous system. which constitute the bulk of nervous diseases. Then. are 176 special nervous diseases, classed as follows: peripheral, 87; spinal cord, 40; brain, 28; nod functional. 21. Of these there are about 65 which are either very common or extremely important (Dana). In their proper place are found articles on the fol lowing nervous diseases or conditions: A CROME GA LY ; A POPLEXY ; CAISSON DISEASE; CATALEPSY; CIIOREA ; EMBOLISM ; EPILEPSY ; FACIAL NEURAL GIA; GOITRE; 11 YSTERIA ; IN SOM N IA: LOCOMOTOR ATAXIA ; MENINGITIS; MYELITIS; _NEURASTHENIA; NECRALGIA ; NEURITIS; NEUROSIS I including OCcUpolion neuroses) ; NECROTIC; PARALYSIS: SCLEROSIS; SLEEPING SICKNESS; THROMBOSIS, etc. There is also an article on NEUROLOGY.
In addition there are articles in the domain of psychiatry, on INSANITY; MANIA ; .1ELAN ClIOLIA ; MONOMA N IA; PARA NOIA ; PARESIS KLEPTOMANIA; DIPSOMA NIA ; PYROM A NIA; PUER PERAL INSANITY. etc., as well as On IDIOCY and 1M I1ECILITY.
Consult : Starr. Familiar Forms of Verrous ens(' (New York, 1895) ; Charm!. Clinical Lec tures on Pertain Diseases of the ,Verrous Sys tem, translated by Ilurd (Detroit, 1888) ; Dirt, 7'he Diseases of the Yerrons System. translated by Hoch (New York, 1893) ; (lowers, Hamm! of Diseases of the Nerroas System (Loudon, 1899) ; Bee'or, Diseases of the Yet-rolls System (Phila delphia, 1898) ; Church and Peterson, Yerrons and Mental Diseases (RI., 1901) : Dana, Text book of Yerrous Diseases (New York, 1901) ; Oppenheim, der Nervenkrankheiten (Berlin, 1902).