**Question:** A 15 yr old girl who has not attained menarche is brought to emergency with complaints of severe pain abdomen and acute urinary retention. On examination there is a tense bulging hymen. All of the following can/will be findings in the patient except:

A. Acute urinary retention
B. Severe abdominal pain
C. Tense bulging hymen
D. Menopausal symptoms

**Core Concept:** In girls, menstruation or the onset of menstrual cycle is characterized by menarche, which occurs around 12-14 years of age. Before menarche, girls are generally asymptomatic and do not have menopausal symptoms.

**Why the Correct Answer is Right:** The correct answer is D (Menopausal symptoms) because menopausal symptoms are not expected in a girl who has not attained menarche. Menopausal symptoms are associated with the decline in ovarian function during menopause, which occurs in postmenopausal women (>50 years old). In this case, we are discussing a girl who has not yet undergone menarche, making menopausal symptoms irrelevant and incorrect.

**Why Each Wrong Option is Incorrect:**

A. Acute urinary retention: This is a finding that can occur in girls due to urethral spasm, a reflex arc triggered by pain or irritation in the lower urinary tract. In this case, the tense bulging hymen indicates possible urethral irritation or obstruction, leading to the reflex arc causing acute urinary retention.

B. Severe abdominal pain: While abdominal pain can be present in girls, menstruation-related pain or dysmenorrhea typically occurs during menstruation, not before menarche. In this scenario, the severity of pain and acute urinary retention suggest an unrelated cause, such as urinary tract infection or urethral stricture.

C. Tense bulging hymen: The hymen is a thin membrane that covers the vaginal opening, and its bulging or distension may cause pain, bleeding, or urinary retention. In this case, the tense bulging hymen indicates that the girl may have experienced traumatic injury or urethral irritation, leading to the reflex arc causing acute urinary retention.

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**Clinical Pearls:** In girls, menstruation is a normal event that occurs during puberty, typically around 12 years of age. However, the presented symptoms, including severe abdominal pain, acute urinary retention, and tense bulging hymen, indicate a traumatic injury or urethral irritation causing a reflex arc to the urethral sphincter muscle, resulting in acute urinary retention. This case highlights the importance of considering uncommon causes for these symptoms in girls, especially when the symptoms occur before the expected age of menarche.