From The Guardian:
One of our first patients, just 17 years old, was brought to us in a wheelchair,” says Professor Christer Lindquist, a pioneer in the use of a brain surgery technique for people with Obsessive Compulsive Disorder (OCD), known as Gamma Knife. “This boy would set himself maths problems, which he had to solve before he could eat. His OCD had become so severe, and the maths problems he set himself so complex, that he couldn’t solve them any more, so he couldn’t eat.
(With thanks to muriel)
Mathematics under the Microscope 
“This boy would set himself maths problems, which he had to solve before he could eat. ”
I am not sure it is related, but :
“human’s gut interpretation of “real meaning of a piece of
writing or of a chess party remained unexplored for ethical reasons as much as the gut content of human qualia:
yet, there is a recorded instance of a mathematician
who experiences abdominal pain upon coming across an unrigorous mathematical argument ([63] V. Milman , To-day I am 70,].)
from Gromov, Ergobrain
By: o on December 19, 2009
at 2:43 pm
Hi my friend has the same problem how do I I I I help him
By: Rohin on November 1, 2016
at 1:25 am