A small percentage of people who experience hair loss also experience spontaneous pain in the scalp. Brushing or air blowing the scalp can also cause pain. Researchers have concluded that pain is more significant in the areas of the scalp that have hair loss, mainly in the upper front and sides. The areas that were not painful were not affected by hair loss (mostly the back of the scalp). The balding sections also had a lower pain threshold than the non-balding parts. Also, the scalps of balding people had a lower pain threshold than the same regions of healthy controls.