Ovarian hyperstimulation syndrome (OHSS) is a potential complication of certain fertility drugs, in particular gonadotropins, used to stimulate egg production.
In certain women, the ovaries produce too many follicles (small sacs containing eggs) and become swollen and enlarged, while some fluid accumulates in the abdomen.
Symptoms vary depending on the degree of the condition and possibly include nausea, vomiting, abdominal bloating and pain, diarrhea, headache, low urine ouput, and ovarian cysts.
Hyperstimulation generally resolves spontaneously with conservative management but, sometimes, medical intervention is necessary.
Treatment includes reduction of activities, close monitoring, intravenous fluid, and possibly, removal of excess fluid from the abdomen.