03/29/2013 08:01 am ET Updated Mar 29, 2013

'Grey's Anatomy': Sarah Chalke Pulls From Her Personal Life For Dramatic Kawasaki Disease Story (VIDEO)

It was like a page ripped out of her own life when Sarah Chalke guest-starred on "Grey's Anatomy." She portrayed Kasey, a mother desperate to find out what was wrong with her son. He had been falsley diagnosed, but Kasey felt certain she knew what was wrong. She just needed a doctor to listen.

The only one willing to do so was Meredith, and it was a good thing. "Parker has Kawasaki Disease," Meredith told Kasey. "You fought for your son. You didn’t give up. You saved his life today." She was right.

Kawasaki disease is a rare disease that is hard to diagnose. It's also very personal for Chalke, as she faced a similar battle when her own son was three-years-old. She wanted to play this part to raise awareness of the disease. And she insisted that the symptoms of the disease be mentioned and shown to help any parents watching.

Buddy TV said that this episode was proof that parents known their kids better than anyone, so kudos to Meredith for listening.

Saving lives is just a party of the job on "Grey's Anatomy," Thursdays at 9 p.m. ET on ABC.

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