Menstruation

body excretes excess uterine lining if conception has not occurred

initial onset of menstrual cycle

• Flow lasts 2-6 days
• Volume varies from 6-8 oz
• Duration varies 24-42 days
• Ovulation occurs 14 days from onset of next cycle

simultaneous cycles among women living in close proximity

Symptoms of physical and psychological discomfort that occur 2-12 days before period

pain or discomfort before or during menstruation

the absence of menstruation

disease that occurs most commonly in menstruating women and that can cause a person to go into shock