CVS Research

Cyclical Vomiting Syndrome Research (based in the UK) is dedicated to providing information and advice to sufferers of CVS and their carers. We will try to keep things as simple as possible to help you through this debilitating illness.

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CVS presents differently in different people. The common symptoms include repeated vomiting over an extended period of time, leading to dehydration which can cause loss of consciousness, there may be alternate chills and sweating with, or without, actual temperature fluctuations, restlessness/restless leg syndrome, stomach pains, drowsiness, pale skin, not wanting to talk, extreme thirst (although even a small sip of water may induce more vomiting), dizziness, sensitivity to light.

The indication of an oncoming episode (the prodrome stage) can be indicated by sweating and nausea, a pale skin, and possibly abdominal pain.

The vomiting phase brings acute nausea, vomiting and retching several times an hour. Untreated this can last for a few hours to several days. There may or may not also be intense abdominal pain.

The recovery phase is indicated by cessation of vomiting, retching and feeling of nausea, and being able to eat and drink without bringing on nausea.

Signs of dehydration - which mean you should seek medical help - are extreme thirst and dry mouth; dark-coloured, or infrequent, urine, light-headedness or fainting; drowsiness. Any of these symptoms seen in children should be treated straight away.

In the chart below the term P.O. indicates orally (by mouth); S-L is sublingual (under the tongue); treatment could also be by suppository.


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