Sharon, aged 26 years, had been married for two years. Menarche was at age 14 with regular periods. When she was 24 her periods became

irregular and she was started on the combined oral contraceptive pill.

Wishing to become pregnant, she had stopped taking the pill one year

earlier but her periods did not return. Her partner’s sperm count was

normal.

The following investigations were carried out (reference ranges are

given in brackets):

 LH 21 IU/L (2–15)

 FSH 42 IU/L (1–15)

 Prolactin 350 mU/L (50–700)

 (a) What do the high gonadotrophins suggest in this case?

 (b) What is Sharon’s principal option to achieve a pregnancy?​