Menarche: The Onset of Menstruation During Puberty

Menarche is the term for the first menstrual period, marking the beginning of reproductive function at puberty. It typically occurs between ages 10 and 15, signaling that the body’s hormonal axis has matured enough to support ovulation and potential fertility.

Menarche is a normal developmental milestone. If it hasn’t occurred by age 15 (or within 3 years of breast development), a medical evaluation is recommended to rule out underlying conditions.