Basic Trope: A woman who has particularly problematic periods. * Played Straight: Alice has her period and she has severe cramps and becomes emotional to the point of insanity. * Exaggerated: Alice turns into a bleeding Eldritch Abomination with a Hair-Trigger Temper and an insatiable sex drive every month. * Inverted: Alice is an Eldritch Abomination that becomes a normal and innocent human girl during her period. * Justified: Alice has a serious hormonal disorder. * The story takes place during a time or place where female anatomy is more based on myths and urban legend rather than scientific fact. * Subverted: Alice has her period, and aside from the usual discomfort and bleeding, nothing too serious happens. * Double Subverted: ...but she has psychic powers