Boy, 4, who suffers from life-threatening startle disease, to start school

A four-your-old boy with a rare condition can literally be left scared stiff by everyday occurrences, like passing a dog in the street or his mother opening a packet of blueberries, she has said.

Jacob Madgin has hyperekplexia, also known as startle disease, which causes his body to overreact to shocks and make his muscles tense up. It is thought only 70 families in the world are affected.