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Hypogonadotropic hypogonadism

  • Alternative Names

    Gonadotropin deficiency; Secondary hypogonadism; Kallmann syndrome

    • Absence of secondary sexual characteristics such as pubic, facial, and underarm hair
    • Inability to smell (in some cases)
    • Lack of development at puberty (may involve incomplete development or a significant delay in development)
    • Underdeveloped testicles
    • Short stature (in some cases)

    Signs and tests

    Tests that may be done include:

    • Blood tests to measure various hormone levels
    • LH response to GnRH
    • MRI of the head