Cyclic vomiting syndrome (CVS) is an aberrant gastrointestinal disorder that affects both children and adults. It’s characterized by sudden unmasked episodes of severe queasiness and vomiting that result in physical exhaustion. Sufferers cycle through four distinct phases; the onset phase known as prodrome phase, when they feel nausea and vomiting starts, followed by the phase of intense nausea and vomiting, which could last for some hours to several days and render the individual bedridden; then the recovery phase, and finally the well phase, when no symptoms are present.
Symptoms. Symptoms of Cyclic Vomiting Syndrome include nausea and vomiting, sweating and retching, drowsiness, pale skin, loss of appetite, fever, abdominal pain, sensitivity to light, and headache. These symptoms mainly occur in the morning and start with sweating and retching followed by vomiting episodes that usually last from a few hours to several days. Each episode of vomiting causes tiredness and drowsiness. Episodes tend to start at the same time every day, have the same duration, and present the same symptoms.