Pulsatile gonadotropin secretion is a critical endocrine component of
the regulation of the normal menstrual cycle. Pulsatile luteinizing ho
rmone (LH) secretion changes dynamically across the menstrual cycle. D
erangements of pulsatile LH secretion are found in virtually every men
strual disorder. This article summarizes the key features of pulsatile
LH secretion in the normal menstrual cycle and in ovulatory disorders
.