FertilityPregnancyTrying to Conceive

Ovarian hyperstimulation syndrome is a complication which arises as a result of women injecting hormones in order to increase egg production in the ovaries.

What are the symptoms of ovarian hyperstimulation syndrome (OHSS)?

Generally, OHSS can be categorised as mild, moderate and severe. The most common symptoms of mild OHSS are bloating and abdominal pain. Moderate symptoms may additionally include vomiting, while severe OHSS can cause dehydration, increasing pain, vomiting, difficulty in breathing and passing only small amounts of urine.

How common is ovarian hyperstimulation syndrome?

OHSS is reasonably common in treatments such as IVF, with up to a third of patients experiencing symptoms from mild to severe. Mild OHSS is very common, whereas severe OHSS is uncommon (1% of IVF cycles).

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