Read more articles on Cephalic Disorders Written by: NIH Updated at: Jan 15, 2013 15:27 IST SHARE FOLLOW ...

Sometimes, during the 23rd and 26th day of conception, the head of the neural tube of the embryo doesn’t close. This neural tube defect results into the cephalic disorder called anencephaly.

According to The Independent, Sana is said to suffer from 'a cephalic disorder such as polycephaly, a condition which means having more than one head and is most commonly seen in turtles and snakes'.