A severe and continuous condition that results in sudden and extreme pains in the face, trigeminal neuralgia can also cause sufferers to experience a numbness or tingling sensation or a slow aching pain immediately before an episode, which typically lasts from several seconds to a few minutes on a daily, weekly, monthly or even yearly frequency.

When an injury to the head from a serious blow or impact occurs and disrupts the natural and normal functioning of the brain, a traumatic brain injury can result. This condition is also common when something pierces the head, breaking through the cranium and penetrating brain tissue. And when the brain tissue is damaged a host of symptoms can appear such as serious changes in mood or behavior, cognitive disabilities and even a persistent and vegetative state.