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.
In a retrospective review of midsagittal T1-weighted brain MRI studies of 20 patients with Joubert syndrome ranging in age from 18 days to 23 years, Spampinato et al. (2008) found absence of decussation of the superior cerebellar peduncles in all 6 patients over 30 months of age.