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)

Tests that may be done include:

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

Images

Endocrine glands

Pituitary hormones

The pituitary gland

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Hypogonadotropic hypogonadism Overview

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Hypogonadotropic hypogonadism Treatment

Review Date: 07/25/2009
Reviewed By: Robert Cooper, MD, Endocrinology Specialist and Chief of Medicine, Holyoke Medical Center, Assistant Professor of Medicine, Tufts University School of Medicine, Boston, MA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org)