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Hypogonadotropic Hypogonadism.

Kanthi Bangalore Krishna¹, John S Fuqua², Selma F Witchel¹

¹Division of Pediatric Endocrinology and Diabetes, UPMC Childrens Hospital of Pittsburgh, 4401 Penn Avenue, Pittsburgh, PA 15224, USA.

Endocrinology and Metabolism Clinics of North America

|April 27, 2024

Summary

This summary is machine-generated.

Delayed puberty, often caused by hypogonadotropic hypogonadism (HH), occurs when reproductive development is significantly postponed. HH involves insufficient hypothalamic/pituitary signals, impacting sex steroid production and leading to absent puberty signs.

Keywords:

Amenorrhea Delayed puberty Hypogonadotropic hypogonadism

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Area of Science:

Endocrinology
Pediatric Endocrinology
Reproductive Medicine

Background:

Delayed puberty is defined by the absence of expected secondary sexual characteristics at specific ages.
A key cause is hypogonadotropic hypogonadism (HH), characterized by inadequate gonadotropin secretion.
HH is distinct from hypergonadotropic hypogonadism, which stems from primary gonadal failure.

Purpose of the Study:

To define delayed puberty and its association with hypogonadotropic hypogonadism (HH).
To differentiate HH from hypergonadotropic hypogonadism.

Main Methods:

Review of established definitions for delayed puberty based on standard deviation scores (SDS).
Explanation of the pathophysiology of hypogonadotropic hypogonadism.
Comparison of HH with hypergonadotropic hypogonadism based on hypothalamic/pituitary versus gonadal function.

Main Results:

Delayed puberty is diagnosed when pubertal onset is 2-2.5 SDS later than the population mean.
Hypogonadotropic hypogonadism results from insufficient stimulation of the gonads by the hypothalamus and pituitary.
Individuals with HH typically possess normally functioning gonads.

Conclusions:

Delayed puberty necessitates evaluation for underlying causes like HH.
Understanding the distinction between hypogonadotropic and hypergonadotropic hypogonadism is crucial for diagnosis and management.
HH represents a central cause of pubertal delay due to impaired hormonal signaling.