system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 16-year-old girl is brought to the physician because she has not yet reached menarche. There is no personal or family history of serious illness. She is at the 20th percentile for weight and 50th percentile for height. Vital signs are within normal limits. Examination shows mild facial hair. There is no glandular breast tissue. Pubic hair is coarse and curly and extends to the inner surface of both thighs. Pelvic examination shows clitoromegaly. Ultrasound shows an absence of the uterus and ovaries. Which of the following is the most likely underlying cause for this patient's symptoms?
assistant
5-α reductase deficiency