Sims and Stack Explain How Drug-Free and Surgery-Free Treatment of Tourette's Is Possible

The easiest way to understand how Sims and Stack explain Tourette's syndrome is to consider the experience of accidentally and unexpectedly hitting a thumb with a hammer, touching a stove, or stumping a toe. Many people will utter a loud "Ouch!" or "Darn" or some other expletive we cannot use on a family-oriented website in response to pain.

Suppose the nerve fibers that conduct pain to the brain somehow got crossed with the nerve fibers involved in seeing a woman with large breasts, or being pulled over to the side of the road by a traffic policeman, or seeing a large yellow object. The brain might generate an impulse to say "Piggie! Piggie! Big tits!" or "F----ing Pig! F---ing Pig!" or "Tweetie Bird! Tweetie Bird!" the same way it generates an impulse to say "S---!" when someone touches a hot stove.

People who have Tourette's syndrome tend to not to have "crossed wires" while they are focusing on difficult or interesting tasks. They often consciously try to suppress inappropriate speech and movements, until they just can't. Sims and Stack tell us how this can happen.

The nerves leading from the muscles to the brain sometimes amplify pain signals to make sure the brain gets the message. "Fast" pain fibers in a large nerve enter the base of the brain from the face. Nerves that transmit information about temperature enter the brain at the same place, and the outgoing cranial nerves VII, IX, and X leave the brain in this region.

These cranial nerves control the front of the face, the sides of the face, and the lower digestive tract. Sims and Stack believe that if these nerves are compressed together, they may engage in cross talk, similar to a short circuit, transferring nerve impulses from one to another, partially bypassing the higher control centers of the brain. The stronger the nerve impulse, the harder it is for the higher levels of the brain—which are the usual targets of drug treatments—to intervene and stop the tic.