This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Demography and family planning, Subject name: Social & Preventive Medicine
The most common side effect of IUCD which requires its removal 
Select and explain. 
A. Bleeding, B. Pain, C. Pelvic infection, D. Ectopic pregnancy
B: Pain
Answer: B: Pain 
Explanation: Pain is the second major side effect leading to IUCD removal WHO estimates that 15-40 percent of the IUCD removal appears to be for pain only Pain may be experienced during the inseion and for a few days thereafter and during menstruation Reference: Park&;s textbook of preventive and social medicine, Page no: 498