Cyclical vomiting syndrome (CVS) is a rare vomiting disorder most commonly seen in children, although it can affect adults too.

Someone with CVS will frequently feel very sick and will vomit forhours, or even days, at a time.

They will then recover from the episode and feel perfectly well, before experiencing another episode perhaps a month or so later.

These vomiting attacks are not explained by an infection or other illness.

CVS canaffect a person for months, years or even decades. Symptoms can beso severethat some sufferers may need tostay in bed and be treated in hospital during an episode.

It can be afrightening condition that affects everyday life, butthe cycle is possible to manage with lifestyle changes and medication.

Read on to find out the answers to the following:

  • What are the symptoms?
  • What is the likelycause?
  • Who is affected?
  • How is a diagnosis made?
  • How should I manage avomiting episode?
  • Can vomiting attacks be prevented?
  • What are the possible complications?
  • Further advice and support
Content supplied by the NHS Website

Medically Reviewed by a doctor on 4 Jan 2017