Causes. In trigeminal neuralgia, also called tic douloureux, the trigeminal nerve's function is disrupted. Usually, the problem is contact between a normal blood vessel â in this case, an artery or a vein â and the trigeminal nerve at the base of your brain.This contact puts pressure on the nerve and causes it to malfunction.Trigeminal neuralgia can occur as a result of aging, or it can be related to multiple sclerosis or a similar disorder that damages the myelin sheath protecting certain nerves.Less commonly, trigeminal neuralgia can be caused by a tumor compressing the trigeminal nerve.rigeminal neuralgia can occur as a result of aging, or it can be related to multiple sclerosis or a similar disorder that damages the myelin sheath protecting certain nerves. Less commonly, trigeminal neuralgia can be caused by a tumor compressing the trigeminal nerve.
The world's first fully synthetic plastic was bakelite, invented in New York in 1907 by Leo Baekeland who coined the term 'plastics'. Many chemists have contributed to the materials science of plastics, including Nobel laureate Hermann Staudinger who has been called the father of polymer chemistry and Herman Mark, known as the father of polymer physics.
Updated October 30, 2014. The Barbie doll, which first appeared on the world-stage in 1959, was invented by Ruth Handler (co-founder of Mattel) after she realized that her daughter liked to play with paper dolls that resembled grown-ups. Handler suggested making a three-dimensional doll that looked like an adult rather than a child.