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Huntington's disease is a complex degenerative disorder that affects the central nervous system. Huntington's disease is an autosomal-dominant, progressive neurodegenerative disorder typically presents during mid-life with a distinct phenotype, including chorea and dystonia, incoordination, cognitive decline, and behavioural difficulties. Attempts to study early disease are not unique in neurology (e.g., mild cognitive impairment and vascular cognitive impairment), but studying otherwise healthy-appearing individuals who have nearly 99% certainty of manifesting the symptoms of brain disease does provide distinct but valuable information about the true natural history of the disease. The review aims majorly on four areas namely: mehanisms, features, treatment and other aspects of Huntington’s disease.