Rev. Jesse Jackson announces Parkinson's disease diagnosis

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Well-known civil rights activist the Rev. Jesse Jackson announced Friday that he has been diagnosed with Parkinson’s disease.

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“Recognition of the effects of this disease on me has been painful, and I have been slow to grasp the gravity of it,” he wrote in a statement released Friday. “For me, a Parkinson’s diagnosis is not a stop sign but rather a signal that I must make lifestyle changes and dedicate myself to physical therapy in hopes of slowing the disease’s progression.”

Jackson says he's been seeking outpatient care for two years for Parkinson's disease and plans to dedicate himself to physical therapy.

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In a Friday letter to supporters, the 76-year-old says family and friends noticed a change in him about three years ago and he could no longer ignore symptoms.

He says the diagnosis isn't a sign to stop working but a "signal" to make "lifestyle changes" to slow progression of the chronic neurological disorder that causes movement difficulties.

The civil rights icon also released a Northwestern Medicine letter saying he was diagnosed in 2015 and has sought outpatient care.

Jackson runs the Chicago-based Rainbow/PUSH Coalition. He's remained a strong voice in anti-discrimination efforts, including advocating for affordable housing, and been a fixture at protests nationwide.

Jackson declined further comment Friday.

The Associated Press contributed to this report.