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CENTRAL PAIN FROM LESIONS OF THE PONS

1923; American Medical Association; Volume: 10; Issue: 5 Linguagem: Inglês

10.1001/archneurpsyc.1923.02190290011002

2330-9628

T. H. WEISENBURG,

Neurology and Historical Studies

While pain and painful paresthesia have long been known as symptoms of thalamic disease, it has always been a question amongneurologists whether these symptoms could occur from involvement of the central nervous system below the optic thalamus. The pain and uncomfortable paresthesia caused by disease of the thalamus, have been explained by most observers as being due to irritation of fibers of the sensory tracts, but Henry Head 1 believes that central pain is the result of setting the thalamic center, located in the medial nucleus, free from cortical control, with the result that it acts without restraint to all stimuli capable of arousing affective states. According to him the cortical sensory fibers end in the lateral nucleus, the region usually affected in cases exhibiting the thalamic syndrome. Head states that he "has not found this over-response to stimuli, as well as spontaneous pain, from lesions of other parts of