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SCOTT BAIO became a father to an adorable baby girl named BAILEY DELUCA last November, but the joy of his baby's birth (with wife RENEE SLOAN) was soon overshadowed by fear and sadness. The TV veteran opens up on People.com about how just one day after the couple brought their baby home from the hospital, they were told she tested positive for a disorder called GA-1, which can cause seizures and even death.

"It was the worst time in my life," Baio says. "Every breath that you take, every thought that you have, every moment that you're conscious, it's all you're thinking about. The disease is a constant in your brain. It never leaves you."

It was a grueling 10 weeks of testing, but thankfully, the ending was a happy one. Bailey was given a clean bill of health -- the original result being a false positive. "We jumped through the ceiling," Baio recalls of receiving the good news.

Despite all the stress and worry, Baio says he's glad he went through it. "This sort of thing puts everything else in perspective."