[Hormonal changes in transient cerebral ischemia in young women].

Examination of 20 females aged 24-45 showing transient disturbances of cerebral circulation included measurement of serum concentrations of FSH, LH and estradiol at varying phases of the menstrual cycle. It was found out that estradiol and LH levels fell during the ovulation peak of the menstrual cycle. Transient defective circulation in the brain of young women is thought to result from anovulation, predominantly low-estrogen menstrual cycle.