Who is affected?

CVS is most commonly seen in children it's usually diagnosed at ages three to seven.

Children who suffer migraines and sensitivity to light and sound are more likely to develop the condition.

CVS can clear up by the time the child becomes an adult, although it can affect adults too.

It's not known exactly how commonCVSis, but one study suggests that it affects around three out of 100,000 children.

Content supplied by the NHS Website

Medically Reviewed by a doctor on 21 Dec 2018