The former World Heavyweight Boxing Champion, Muhammad Ali, was suffering from _____?

The former World Heavyweight Boxing Champion, Muhammad Ali, was suffering from _____?

سابق ورلڈ ہیوی ویٹ باکسنگ چیمپئن محمد علی _____ میں مبتلا تھے؟
Explanation

World Heavyweight Boxing Champion Muhammad Ali was diagnosed with Parkinson's disease in 1984.