A 20-year-old nulliparous female college student sees the nurse because she has missed her last two menstrual periods. She reports she has not had sexual intercourse in one month. The nurse requests a pregnancy test, which is negative. Based on this client’s history, which assessment is most important for the nurse to obtain?

Choice A reason: Amenorrhea in a young woman may be linked to endocrine disorders such as polycystic ovary syndrome (PCOS) or thyroid dysfunction. Assessing body weight, hirsutism (excess hair), and thyroid enlargement helps identify hormonal imbalances. Choice B reason: These symptoms may suggest diabetes or an eating disorder, but they are less directly connected to missed periods without further context. Choice C reason: These signs may indicate pregnancy or premenstrual syndrome, but the pregnancy test is negative, and these symptoms are not the most relevant for missed periods. Choice D reason: These findings suggest infection or sexually transmitted disease, which are not the most likely causes of amenorrhea in this case.