Final answer:
When a woman is on oral contraceptive pills (OCP) and newly prescribed anti-epileptic medication, it can disrupt the hormonal balance in her body, leading to amenorrhea.
Step-by-step explanation:
When a woman is on oral contraceptive pills (OCP) and newly prescribed anti-epileptic medication, it can disrupt the hormonal balance in her body. The anti-epileptic medication may interfere with the effectiveness of the OCP, leading to a hormonal imbalance and amenorrhea, which is the absence of menstrual periods.
Keywords: oral contraceptive pills, anti-epileptic medication, hormonal imbalance, amenorrhea