Hereditary Ataxic Degeneration
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
Hereditary Ataxic Degeneration was previously used as a collective term for familial diseases characterized by movement incoordination, including Friedreich's familial ataxia and Marie's hereditary cerebellar ataxia. While transitional cases between these forms exist, recent scholarship tends to recognize them as distinct conditions rather than manifestations of a single disease.
Encyclopedia entry (1928–1936)
Hereditary Ataxic Degeneration, or ataxic familial syndrome. Under this name, all familial diseases were previously grouped, the main symptom of which is incoordination of movements—familial ataxia of Friedreich and hereditary cerebellar ataxia of P. Marie. Since there are indeed many 'transitional' cases between both forms, it was assumed that this was the same disease (Jendrassik). However, in recent times, there has been a renewed tendency to recognize the independence of individual forms. The term Hereditary Ataxic Degeneration thus acquires the meaning of only a collective designation.
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“Hereditary Ataxic Degeneration.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/hereditary-ataxic-degeneration/