The nervous affections which follow acute infectious diseases are not always due to that primary infection, but to a secondary infection, or they may be only an indirect result.The diseases of the nervous system which are suspected but not fully proved to be of infectious origin are, especially, North Face Outlet beri-beri, poliomyelitis, Landry's disease; certain Polo Ralph Lauren Outlet forms of myositis, neuritis and myelitis; some of the cerebral palsies of children; chorea; disseminated sclerosis and other cerebrospinal and spinal scleroses; amputation neuritis; herpes zoster.Finally, we find a number of affections following in the wake of infectious processes, but hardly to be classed as indicating the action of specific virus. Such are the constitutional neuroses and psychoses, the adynamic cerebral affections, the results of oedema or of arterio-scleroses; various forms of scleroses of the spinal cord, to which the nervous system is always prone, and which any one of various poisons will help to bring out; subacute forms of multiple neuritis of the ordiuary type, such as arise from manifold causes. A disease may be suspected to be of Oakley Sunglasses infectious origin when bacteria are found The North Face Outlet Store in the tissues; when the outbreaks occur in epidemics or are Nike Air Max 90 related to seasons or locality; when it exhibits vascular and histological changes characteristic of the infection, or specific toxicity of the blood and urine; or it has become much less frequent since the introduction of antiseptics. The discovery of bacteria is by no means conclusive, since they are often only incidentally present. We should suspect a disease of not standing in a very close relation Nike Shoes Australia to infection if it was of a kind developing under other influences; and it is therefore important to study what are the morbid conditions which occur most easily as a consequence of various general strains Nike Australia and as a result of heredity. The French school has doue much iu this direction. The arguments are strong in favor of the infectious origin of the different forms of acute often hemorrhagic myeloneuritis or polymyositis, including beri-beri the epidemic disease of Northern fishermen, Landry's disease, poliomyelitis. We cau at least say that they are due to some poison acting powerfully for short periods and in the manner characteristic of bacterial toxines. Bacteria have been found in Landry's disease, but are not yet accepted as specific. Chorea is probably of infectious origiu Pianese, Dana, Berkley. Bacteria have been found which Nike Air Max may or may not be specific. Myelitis acute, focal or transverse, may be produced experimentally by injection of cultures. It also may follow gonorrhoea, and may occur in a manner suggestive The North Face Outlet of other infectious causes. Amputation neuritis is said to have become less common since the introduction of better methods of asepsis. There is little to be said for the infectious origin of zoster.Acute multiple neuritis may follow almost any one of the infectious processes, but it is difficult to say just what relation it bears to them. The lesions observed have more of the vascular and interstitial character than is ordinarily met with in neuritis of inorganic origin, but are doubtless often due to the products of metabolism. Sometimes, as in diphtheria of rapidly fatal course, no obvious lesions are produced, but modern research is continually widening our resource in this direction; witness the recent observations of Golgi in rabies, and the investigations of NiBchl and others into the pathology of the nerve cell. The meningitis which follows the exanthemata is probably due to secondary infection. It cannot, North Face Outlet Store however, be affirmed that the absence of bacteria indicates the absence of specific local