<unk>  or<unk> , also known as short or scanty periods, is extremely light menstrual blood flow. It is the opposite of heavy periods or hypermenorrhea which is more properly called menorrhagia.
Hypomenorrhea
Blennorrhoea
Dysmenorrhea
Dyspareunia
Amenorrhea
Oligomenorrhea
Hypersthenuria
Hypospermia