Flygirl (sometimes spelled Fly Girl or Fly-Girl) is a super-heroine published by Archie Comics.
Premenstrual dysphoric disorder (PMDD) can be considered a severe form of premenstrual syndrome (PMS). Both PMS and PMDD are characterized by unpleasant physical and psychological symptoms that occur in the second half of a woman's menstrual cycle, most commonly in the days preceding the menstrual period. Premenstrual dysphoric disorder (PMDD) can be considered to be a severe form of premenstrual syndrome (PMS), with symptoms that interfere with daily activities and functioning.
Estrogen levels in women with PMS or PMDD are almost always normal. The problem may instead lie in the way estrogen talks to the parts of the brain involved in mood. Women with PMS or PMDD may also be more affected by the normal fluctuations of estrogen during the menstrual cycle.