We normally associate aches with elders so sometimes parents dismiss young children's complaints as growing pains. But that isn't always the case. Actress and mother of three, Jennie Garth, recently talked about a three month scare that she and her husband, Peter Facinelli, had with their five-year-old daughter. Lola. She said:

"It turned out to be a form of JRA [Juvenile Rheumatoid Arthritis] and we treated her and it's in remission," says Garth. "It was tough, but she's better now."

JRA can be caused by an overactive immune system, a virus or infection or genetics. To learn about the symptoms, read more