Identifying the things that tend to trigger your psoriasis is a great way to defend yourself against the disorder. The more you can sidestep your triggers, the less frequent or severe your flare-ups will be.

"Stress is a huge factor for me," LeAnn admits. After becoming an international sensation at age 13 with her hit song "Blue," and then coping with her parents' divorce a year later, LeAnn says she learned some tough lessons as a teen about caring for herself.

"Early on I had these major life lessons [that] beauty is more than skin deep," she says. "[I also learned] that saying no is a good thing, and that my health was the most important thing to take care of. Instead of putting my job first, I started putting me first."

She hasn't changed her perspective since going into remission. “Now I'm incredibly happy and settled in my marriage and I try to resolve problems [quickly] instead of letting them linger and bubble in my body."

NEXT: The emotional effects >>