PCOS (polycystic ovary syndrome)
A hormonal condition affecting ovulation, associated with multiple small follicles on the ovaries and, often, irregular periods.
In plain English
It's a common hormonal condition that can make ovulation irregular or absent, and it can affect how your ovaries respond to stimulation drugs.
Why it matters
People with PCOS often respond strongly to stimulation medication, so they're monitored closely for a higher risk of OHSS.
Related terms
Guides that cover this
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