When you say any part of the body is damaging, as an adult you can properly measure the pain and know exactly where the pain is expected as a result of the activities that you have made in the recent past or not. If not, and is not suffering from the flu or something similar, there sedereste up and you wonder where the pain might come.
However, it is not so clear with Fibromyalgia in children. Children, even when they are older to 15 or16 can not properly measure the pain that they feel so consistently underplaying their discomfort as well as physical and mental pain. This is part of growing up. That’s why although the Fibromyalgia was very common in children has taken so long to discover. 
Time for some good news
You have to be careful next time your son or derivative protest about the pain of muscle and body. Watch them very carefully and checking whether their sleep has modeled variable and are finding difficult mentally compute the data. These are sure signs that indicate the fire Fibromyalgia. The good news here is that this ailment in children can be reversed completely different than what adults are contagious. Early detection and treatment can completely cure Fibromyalgia in children.