Former Portland Trail Blazer Brian Grant is going public with a diagnosis of early-onset Parkinson's disease.

Grant, who has moved back to Portland, told ESPN’s Ric Bucher he was diagnosed by a doctor in Los Angeles in January. The 37-year-old said he had been noticing tremors in his left hand since last summer while still living in Miami, where he played four seasons for the Heat.

He is now living in Portland with his wife and four children.

Grant told ESPN he has since been in contact with actor Michael J. Fox, who also suffers from the early-onset Parkinson's, as well as boxing legend Muhammed Ali.

The neurological disease shows symptoms of tremors, and changes in walking and speech. There is no known cure, but there are drug and therapeutic treatments to help reduce the symptoms.

"Brian Grant is one of the greatest team players and warriors that I have ever coached," Miami Heat president Pat Riley said Monday night. "I'm saddened by this news. Brian will find a way to fight this because that is the way he's always been, a fighter. He will overcome this."

The diagnosis in patients under 40 is around 5 percent, doctors say.

Grant says he is seeing a neurologist and another doctor who also specializing in using naturopathic and Oriental medicine treatments along with the latest in modern medicine.

"Just me believing in a positive spirit will take me farther in the long run," Grant told ESPN.