The exact causes of<unk>  are not known for sure but there is a link between falling levels of the female hormone estrogen and the onset of a migraine attack. The estrogen level may fall after bleeding occurs during the<unk>  cycle or when external sources of estrogen are no longer taken, like when a woman stops taking birth control pills or hormone pills in hormone replacement therapy.
Menstrual migraine
Acephalgic migraine
Migraine
Migraine 
Mixed tension migraine
Abdominal migraine
Lupus headache
Sexual headache