Gynaecology & Obstetrics Which of the following is a definition of primary amenorrhea? A Absence of menses by the age of 12 regardless of presence of normal growth and development of secondary sexual characteristics B Absence of menses by the age of 13 regardless of presence of normal growth and development of secondary sexual characteristics C Absence of menses by the age of 14 regardless of presence of normal growth and development of secondary sexual characteristics D Absence of menses by the age of 15 regardless of presence of normal growth and development of secondary sexual characteristics 💡 Explanation Which of the following is a definition of primary amenorrhea? ✓ Correct Answer: D. Absence of menses by the age of 15 regardless of presence of normal growth and development of secondary sexual characteristics