<unk>  usually affect both legs, especially the calf muscle in the lower leg or the muscles in the front of the thighs. Less commonly, the arms are affected. They are normally felt on both sides. Typically, the<unk>  are felt in the muscles, rather than in the joints. The amount of<unk> varies from mild to very severe. The<unk>  may start in the evening or at night. Because the<unk>  normally appear while the child is sleeping, they often wake the child up at night. The<unk>  often last for 30 minutes to two hours, and are often but not always gone by the morning. Typically, the<unk>  appear once or twice each week, but it can be more frequent or less frequent. The<unk>  are not in the same place as an injury, including overuse injuries such as shin splints, and the child does not limp while walking.
Growing pains
Weather pains
Picardy sweat
Morphea
Neck spasm
Heat cramps
Toothache
Vomiting