Suggest Remedy For Excessive Sweating In Child

Since birth my son has broken out in sweat beads or clamminess on the upper side of his body, when the lower side or the side he lays on, does not. If he turns to lay on the other side, the upper side exposed to the air begins to sweat. He is now 9 and involved in sports. During his game his face, eye and cheek area turn white with a little blue tint, with redness on the outer areas. His arms become cool and clammy to the touch, when he should be hot. Which system of the body should we focus on?