"Jaw pain" refers to any discomfort or soreness felt in the jaw area, which includes the lower part of the face, near the mouth and ears. Full definition
Women can have that too, but I've seen women sitting in the emergency room for three or four hours with jaw pain, waiting to see an oral surgeon. (health.com)
Grinding their baby teeth is not considered particularly problematic or harmful and rarely results in any long term problems, their actions can however cause them to experience jaw pain and headaches. (thefashionablehousewife.com)
However, some children who grind their teeth may eventually develop problems, such as jaw pain or tooth damage over time.» (thetoddle.com)