Which term describes infrequent menstrual periods occurring more than 35 days apart?

• A. Menorrhagia
• B. Oligomenorrhea
• C. Polymenorrhea
• D. Dysmenorrhea

Answer: (B)

The term that describes infrequent menstrual periods occurring more than 35 days apart is oligomenorrhea. This condition indicates that a woman's menstrual cycle is longer than the typical range, which suggests that menstruation is occurring less frequently than normal.

Menorrhagia, on the other hand, refers to heavy or prolonged menstrual bleeding, and does not relate to the frequency of periods. Polymenorrhea describes frequent menstrual periods that occur less than 21 days apart, which is the opposite of the situation described. Dysmenorrhea is associated with painful menstruation, focusing more on the symptoms of the menstrual cycle rather than its frequency. Therefore, oligomenorrhea is the most appropriate term for infrequent menstrual periods occurring with an interval of over 35 days.