OHSS

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Ovarian hyperstimulation syndrome

(OHSS) can occur after taking medicines that stimulate your ovaries, such as clomifene and gonadtrophins,

This can develop after a round of in-vitro fertilisation (IVF). OHSS causes your ovaries to swell and produce too many follicles (small fluid-filled sacs in which an egg develops). Around one-third of women will experience mild OHSS after one cycle of IVF. Less than 10% will develop moderate or severe OHSS after one cycle of IVF.

Mild symptoms may include:

  • nausea
  • vomiting
  • abdominal pain
  • bloating
  • constipation (when you are unable to empty your bowels)
  • diarrhoea
  • dark, concentrated urine

Severe OHSS

A potentially life-threatening condition and can lead to:

  • thrombosis (a blood clot in an artery or vein)
  • liver and kidney dysfunction
  • respiratory distress (difficulty breathing)

You should seek medical attention immediately if you experience any of the symptoms of OSHH. You may need to go to hospital so your condition can be monitored and treated by healthcare professionals.