a.k.a. “Catamenial”

Phyisology

Ovulation is always 14 days before the onset of the first day of period

Normal Menstration

1. Frequency: 24-38 days
2. Regular: Variation between cycle length is no more than 7-9 days
3. Duration: < 8 days
4. Volume: 80 ml blood loss per cycle

Abnormal: AUB - Abnormal Uterine Bleeding