A rhombus is a quadrilateral with all 4 sides being the same length. For example, look at the chopped-off pyramid on the back of a U.S. one dollar bill. The front face you see under the eye is a trapezoid, since it has 4 sides, and the top parallel with the bottom. A square is one example of a rhombus, but you can have a rhombus that isn't a square.
Causes of Trigeminal Neuralgia. In many cases, the cause of TN is never found. According to the National Institute of Neurological Disorders and Stroke, although anyone can get TN, itâs more common among women than men. Itâs also more common in people over the age of 50, although it can occur at any age.
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.his 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.