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Progressive supranuclear palsy
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===== Cognitive and Behavioral Symptoms in PSP-RS ===== Cognitive changes are frequent in PSP-RS compared to other PSP subtypes and include slowed thinking (bradyphrenia), executive dysfunction, and difficulty with planning or problem-solving.<ref name=":5" /><ref name=":8" /> Some patients exhibit apathy, emotional blunting, or involuntary episodes of laughing or crying unrelated to mood.<ref name=":7" /> Some studies report that around half the individuals with PSP-RS develop these personality changes within 2-years of diagnosis.<ref name=":7" /> Dementia is not typically a dominant feature early on but may develop in later stages.
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