The family of a five-year-old boy who throws up every time he gets excited have opened up about his rare illness. Zackery Collins has been plagued by Cyclical Vomiting Syndrome since he was just a baby. It leaves him unable to enjoy birthdays, Christmas and holidays like other children as he's never far from the sick bowl.

Medics were left baffled by Zackery's frequent vomiting episodes as a tot which mum Hannah likened to a scene from the Exorcist. He was initially diagnosed with acid reflux. But despite being prescribed Gaviscon, Zackery continued to be left miserable by the recurrent spewing, and Hannah started to think there might be more to it. Zackery was eventually diagnosed with Cyclical Vomiting Syndrome, also known as CVS. After realising excitement was what triggered the projectile puking, Hannah has attempted to limit activities which might bring on an episode.

Mum-of-one Hannah, from Torquay, Devon, said: "When he's sick it's not normal - it's projectile and rapid-fire, like something out of the Exorcist. "It's like he's possessed. "It takes us by surprise, he never has time to warn us or get to a bathroom - he goes into a sort of conscious coma. "Any special occasion - holidays, Christmas, birthdays - Zackery is sick without fail. Hannah, 34, is hoping that now Zackery finally has a diagnosis, he will be able to get a referral to a specialist in London.

Hannah, who works in trading law, said: "He was diagnosed last September, but CVS is so rare and his paediatrician doesn't know an awful lot about the condition. "There are not many people who are aware of
CVS, or know how to deal with it. It literally started from day one with the sickness. "He was hospitalised when he was barely a day old - to start with he was diagnosed with gastroesophageal reflux disease. "When he was two or three I started to think there was more to it. "When he finally got diagnosed it was a relief - it's scary, but now we can start looking for a cure."