US civil rights leader Jesse Jackson has revealed he has been receiving treatment for Parkinson’s disease.
Reverend Jackson said he planned to “dedicate” himself to physical therapy to slow the progress of the disease.
In a letter to supporters, the 76-year-old said family and friends noticed a change in him about three years ago, and he could no longer ignore symptoms of the chronic neurological disorder that causes movement difficulties.
“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.
“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.”
He said Parkinson’s “bested” his father, Noah Lewis Robinson Sr, who died in 1997 at age 88 after suffering a heart attack.
Reverend Jackson also released a letter from Northwestern Medicine confirming his diagnosis and care.
He vowed to use his voice to help find a cure for the disease.
‘I would rather wear out than rust out’
A protege of the Reverend Martin Luther King, Reverend Jackson was instrumental in guiding the modern civil rights movement on a wide variety of issues, including voting rights and education.
Twice a candidate for the Democratic presidential nomination in the 1980s, he has remained a strong voice in numerous anti-discrimination efforts, including advocating for affordable housing.
It was unclear how his treatment would affect his leadership of the Rainbow/PUSH Coalition, the Chicago-based civil rights group he founded more than two decades ago.
“I will continue to try to instil hope in the hopeless, expand our democracy to the disenfranchised and free innocent prisoners around the world,” he wrote.
“I steadfastly affirm that I would rather wear out than rust out.”
Reverend Al Sharpton said he spent the last few days with Reverend Jackson in New York City.
He said he had “changed the nation and served in ways in which he never got credit”.
“We pray for him, just as he fought for us,” he said.
About 60,000 people in the US are diagnosed with Parkinson’s annually, according to the Parkinson’s Foundation.
It can start with tremors, and symptoms generally worsen over time. The exact cause is unknown. Treatments include medications, surgery and physical therapy.
The disease itself is not fatal but people can die from complications.