Timberlake, 44, opened up about his "debilitating" Lyme disease symptoms after coming under criticism for his tour performances.

Justin Timberlake 's announcement that he was diagnosed with Lyme disease has put a spotlight on the condition that impacts nearly 500,000 people in the United States each year, according to the Centers for Disease Control and Prevention.

Many celebrities, including Justin Timberlake, allegedly contracted Lyme disease; here's the symptoms and best ways to treat it.