Commonest cause of primary amenorrhea:
Gonadal dysgenesis
Mullerian agenesis
Androgen insensitivity syndrome
Stein Levinthal syndrome
Ans. A. Gonadal dysgenesis.Gonadal dysgenesis does not equate with turner's syndrome. There are many causes of gonadal dysgenesis in the female, most of which relate to abnormalities involving X chromosome e.g. Turner syndrome, turner mosaic, 46XY gonadal dysgenesis. 25% of girls with gonadal dysgenesis have 46XX karyotype. Turner syndrome is the most common form of gonadal dysgenesis
Miscellaneous (Obs)