About 1.5 million Americans have the disease, and 60,000 new cases are diagnosed annually. Chances are you have a family member or friend with Parkinson's.
But it's also understandable if you know little or nothing about the disease. I was clueless when my father was diagnosed with Parkinson's more than 15 years ago. He died in 2006.
I remember once holding open a restaurant door for my dad and several other family members. His progress through the doorway and into the lobby was labored.
A family behind us paused as he made his way. I continued to hold the door for them.
"Parkinson's?" the gentleman inquired as his family entered.
He gave me a look that said, "I'm familiar with what you're going through."
Seems I inherited my father's pronounced forehead, blue eyes and knobby knees. I may also have inherited his Parkinson's, though researchers are not yet completely persuaded. My maternal great grandmother also had the disease. A double whammy. It exists in both branches of my family tree.
But the disease may also have an environmental component.
My best friend from high school and college — who grew up just blocks from me in Costa Mesa — was diagnosed with the disease a year ago. What are the odds of that?
He called me last year and told me that friends and family members had noticed in him some "odd" behaviors. I asked him to describe his symptoms, then urged him to see a neurologist. The disease was confirmed.
We both drank the same Costa Mesa well water in the 1950s. Crop dusting took place in certain areas just outside the city.
Were those contributing factors? Who knows.
It seems that two-thirds of people with Parkinson's are men, so there's another strike against me. Actually, it's probably a blessing that men are more prone to Parkinson's than women.