A 28-year-old woman attends the family planning clinic seeking contraception. She has no contraindications to hormonal methods. When counselled about oral contraceptive pills, she asks about the most common reason for discontinuation among users in India. What is the most common cause of OCP discontinuation?

Explanation

## Most Common Cause of OCP Discontinuation **Key Point:** Breakthrough bleeding (BTB) is the most frequent reason for discontinuation of oral contraceptive pills, accounting for 10–30% of dropouts in the first 3–6 months of use. ### Why Breakthrough Bleeding Occurs Breakthrough bleeding results from: - Insufficient endometrial suppression by the progestin dose - Inadequate estrogen to stabilize the endometrium - Most common in the first 3 cycles (transient) - Can persist if the pill formulation is suboptimal ### Clinical Management | Finding | Action | |---------|--------| | BTB in cycles 1–3 | Counsel continuation; reassure (usually resolves) | | Persistent BTB after 3 cycles | Switch to pill with higher progestin or estrogen dose | | Exclude organic pathology | Rule out infection, polyps, malignancy if heavy/prolonged | **High-Yield:** Transient breakthrough bleeding in the first few cycles is NOT a reason to discontinue; counselling and reassurance improve continuation rates. **Clinical Pearl:** Compliance with pill-taking (same time daily) reduces BTB incidence. Missed pills are a common cause of breakthrough bleeding. ### Why Other Options Are Less Common Causes of Discontinuation - **Nausea and vomiting:** Usually mild, self-limiting, and improves by cycle 3. Less frequent cause of dropout than BTB. - **Weight gain:** Controversial and often overstated; metabolic effects are modest with modern low-dose pills. Patient perception exceeds actual weight change. - **Headaches:** Occur in 5–10% but rarely severe enough to warrant discontinuation; migraine with aura is a contraindication, not a cause of discontinuation.