Disturbances of Structure and Function
Many of the advances in medicine made towards the end of last century followed the descriptions of the microscopic morbid anatomical features of individual diseases, and during this century our greater understanding of biochemical and immunological abnormalities has played much the same role. Despite such advances, there remain many diseases where virtually no such abnormalities have been demonstrated so far, and certainly none that are clearly crucial to understanding their pathophysiology or devising effective treatment. Examples of such diseases abound in psychiatry but include so-called psychogenic abdominal pain and a number of neurological conditions. In each case advances in diagnosis and therapy are necessarily empirical, and the little knowledge of aetiology we have is deduced in part from study of the modes of action of drugs to which patients have been found to respond.
KeywordsCluster Headache Arteriovenous Malformation Trigeminal Neuralgia Chronic Daily Headache Tension Headache
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