10 Early Signs of Parkinson's Disease That Doctors Often Miss
Let's be honest: A diagnosis of Parkinson's disease can be pretty unnerving. In fact, an April 2011 survey by the National Parkinson's Foundation revealed that people will avoid visiting the doctor to discuss Parkinson's even when experiencing worrisome symptoms, such as a tremor.
The problem, however, is that waiting prevents you from beginning treatment that -- although it can't cure Parkinson's -- can buy you time. "We now have medications with the potential to slow progression of the disease, and you want to get those on board as soon as possible," says Illinois neurologist Michael Rezak, M.D., who directs the American Parkinson's Disease Association National Young Onset Center.
Parkinson's disease (PD) occurs when nerve cells in the brain that produce the neurotransmitter dopamine begin to die off. When early signs go unnoticed, people don't discover they have Parkinson's until the disease has progressed. "By the time you experience the main symptoms of Parkinson's, such as tremor and stiffness, you've already lost 40 to 50 percent of your dopamine-producing neurons. Starting medication early allows you to preserve the greatest possible number of them," Rezak explains.
Here, 10 often-missed signs that can help you identify and get early treatment for Parkinson's.
1. Loss of sense of smell
This is one of the oddest, least-known, and often earliest signs of Parkinson's disease, but it almost always goes unrecognized until later. "Patients say they were at a party and everyone was remarking on how strong a woman's perfume was, and they couldn't smell it," says Rezak.
Along with loss of smell may come loss of taste, because the two senses overlap so much. "Patients notice that their favorite foods don't taste right," Rezak says.
Dopamine is a chemical messenger that carries signals between the brain and muscles and nerves throughout the body. As dopamine-producing cells die off, the sense of smell becomes impaired, and messages such as odor cues don't get through. Some researchers consider this change so revealing that they're working to develop a screening test for smell function.