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7. Prognosis

Most people with PSP need help with daily activities within two or three years of their initial diagnosis. The average life expectancy is five to nine years after the first symptoms appear, though progressive supranuclear palsy is not directly fatal. The cause of death is usually a complication related to the symptoms, including falls and broken bones caused by muscular issues. Atrophy causes generalized weakness and dysphagia or difficulty swallowing, which can lead to nutritional deficiencies and dehydration. Dysphagia can also cause pneumonia if the individual inhales food or liquid particles into their lungs.

progressive, dysphagia, personal care, falls Paola Giannoni / Getty Images

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