A Portrait of Parkinson’s Disease

Karen Alexander says she is “one of the lucky ones.” Ten years after learning she has Parkinson’s disease, she takes two drugs to control her symptoms and so far has few of them. A tremor on her left side can make it hard to balance a teacup and saucer, but “at 74, it doesn’t bother me much,” she said. Luckily, Ms. Alexander, who lives in a suburb west of Chicago, is right-handed.