A. This is a prime age when children begin to have growing pains, so that may be the cause, especially since he hasn't been sick and hasn't had a fever.
Children with growing pains typically have pain in their legs either late in the day or in the middle of the night. They can be particularly bad after a day of intense physical activity, but it really isn't known what causes them.
Other factors that can point to growing pains as a cause for a child's leg pain include that massaging the area helps, whereas if there was an injury or other medical condition causing the pain, touching or massaging the area would likely make the pain worse. Also, children with growing pains usually do not have any other symptoms, such as weight loss, limping, fever, or joint swelling, and the pain shouldn't limit his activity.
Growing pains also commonly occur:
- in both legs
- in the front of the thigh, the calf muscles, and muscles in the back of the knee
- in children between the ages of 3 and 5 and then 8 and 12 years
- in over 30 percent of children
If you mean that 'nothing seems to help' because the pain keeps coming back, then that is to be expected. If you are able to treat the pain when it occurs and he is then fine for some time until it begins again, then that can be normal, depending on how often it is happening. It may help to give him ibuprofen (Motrin or Advil) on those evenings that he has had a very active day, like after soccer practice, etc. to see if that keeps the pain from even starting that night. You shouldn't do that every night or even on most nights though without talking to your Pediatrician first though.