In his lifetime, Van Gogh (1853-1890) created more than 2,000 paintings and drawings and was a prolific letter writer with missives going at least six pages or longer. According to Professor Khoshbin, the artist’s extraordinary productivity typifies hypergraphia (extensive or compulsive writing or production of other graphic materials). Khoshbin asserts that Van Gogh suffered from temporal lobe epilepsy and a personality disorder associated with it, dubbed the Geschwind syndrome, of which hypergraphia is a defining trait. Professor Khoshbin graduated from...