Pituitary Disorders

Pituitary Disorders in Children: How the Pituitary Gland Affects Growth and Development

The pituitary gland regulates hormones involved in growth, puberty, metabolism, and development. When its function is affected, children may experience Short Stature, Poor Growth Velocity, Delayed Bone Age, Low IGF-1, or delayed puberty.

At HGH for Children, we evaluate growth patterns, hormone levels, Bone Age, and medical history to help identify whether pituitary dysfunction may be contributing to a child’s growth concerns.

What Is the Pituitary Gland?

The pituitary gland is a small, pea-sized gland located at the base of the brain beneath the hypothalamus. Despite its size, it plays an important role in regulating several hormone systems throughout the body.

Because the pituitary influences multiple hormone systems, a disorder affecting the gland can cause different symptoms depending on which hormones are affected.

Pituitary hormones help regulate:

How Does the Pituitary Gland Affect Growth?

One of the pituitary gland’s most important functions in childhood is producing Growth Hormone (GH).

Growth hormone stimulates the liver to produce IGF-1 (Insulin-Like Growth Factor 1), which supports bone growth, growth plate activity, muscle development, and height progression.

When growth hormone production is inadequate, children may develop:

These findings do not automatically indicate a pituitary disorder. A complete growth and hormone evaluation is needed to determine the underlying cause.

Common Pituitary Disorders in Children

Growth Hormone Deficiency

Growth Hormone Deficiency (GHD) is an important pituitary-related cause of impaired growth. Children with GHD may have slow growth, falling height percentiles, Delayed Bone Age, Low IGF-1, and sometimes delayed puberty.

Growth Hormone Deficiency may be:

Congenital: Present from birth because of abnormalities affecting pituitary development or hormone production.

Acquired: Developing later because of injury, tumors, inflammation, radiation, or other conditions affecting the pituitary gland.

Hypopituitarism

Hypopituitarism occurs when the pituitary gland does not produce enough of one or more hormones.

Affected hormones may include:

Children may experience growth failure, delayed puberty, fatigue, low energy, or other hormone-related symptoms.

Pituitary Tumors and Cysts

Pituitary tumors are uncommon in children but can interfere with hormone production or affect nearby structures.

Examples include:

Symptoms depend on the size and location of the lesion and the hormones or structures affected.

Pituitary Structural Abnormalities

Some children are born with abnormalities involving pituitary development, the pituitary stalk, or nearby brain structures. These conditions may impair normal hormone production and affect growth or development.

How Are Pituitary Disorders Diagnosed?

Diagnosis usually combines growth history, physical findings, laboratory testing, Bone Age assessment, and imaging when appropriate.

Step 01

Growth Chart Review

Providers review the child’s height and weight percentiles, growth velocity, and growth patterns over time. These measurements help identify changes in growth and provide important clues about whether hormone-related growth impairment may be present.

Step 02

Laboratory Testing

Depending on the child’s symptoms and clinical findings, laboratory testing may include IGF-1 and IGFBP-3 for growth evaluation, TSH and Free T4 for thyroid function, LH, FSH, Testosterone, and Estradiol for puberty assessment, and Cortisol and ACTH for adrenal function.

Step 03

Bone Age X-Ray

A Bone Age X-Ray evaluates skeletal maturation in comparison with the child’s chronological age. Delayed bone age may occur in children with Growth Hormone Deficiency and other growth or pubertal conditions. The results can also help assess skeletal development.

Step 04

Growth Hormone Testing

When Growth Hormone Deficiency is suspected, Growth Hormone Stimulation Testing may be used to assess the body's ability to release growth hormone under controlled conditions.Results should be interpreted together with growth patterns, physical findings, laboratory results, and other clinical information.

Step 05

Pituitary MRI

A pituitary MRI provides detailed images of the pituitary gland and surrounding structures. It may be considered when there are confirmed hormone deficiencies, abnormal testing, severe growth failure, neurologic symptoms, or other findings suggesting a structural abnormality.

Can Pituitary Disorders Affect Adult Height?

Yes. Pituitary hormone deficiencies can affect Growth Velocity, skeletal maturation, pubertal timing, and final adult height.

The potential effect varies according to the underlying condition, severity of hormone deficiency, age at diagnosis, Bone Age, genetics, puberty, and treatment.

Recognizing an abnormal growth pattern can help determine whether additional evaluation is appropriate while meaningful growth potential remains.

Signs and Symptoms of Pituitary Disorders

Symptoms vary depending on which pituitary hormones are affected.

Growth Symptoms

Puberty Symptoms

Hormonal Symptoms

Neurologic Symptoms

Children with structural abnormalities may also experience headaches, vision changes, or visual field problems. These symptoms can have many possible causes, so they should be evaluated in context rather than assumed to indicate pituitary disease.

Treatment of Pituitary Disorders

Treatment depends on the specific pituitary disorder and the hormone systems affected.

Growth Hormone Therapy

Children with confirmed Growth Hormone Deficiency may be candidates for growth hormone replacement therapy. Treatment can improve Growth Velocity and support appropriate growth when medically indicated.

Hormone Replacement Therapy

If other pituitary hormones are deficient, treatment may include thyroid hormone replacement, cortisol replacement, or puberty-related hormone therapy when clinically appropriate.

Treatment of Structural Conditions

Some pituitary tumors or nearby lesions may require specialized endocrine and neurosurgical evaluation. Management depends on the type, size, location, and effects of the condition. Treatment should always be individualized according to the child’s diagnosis and medical needs.

What Causes Pituitary Disorders?

Pituitary dysfunction can have congenital or acquired causes.

Tumors

Pituitary or nearby brain tumors can interfere with normal hormone secretion or pituitary function.

Radiation Therapy

Children treated for certain cancers may develop pituitary dysfunction following radiation involving the brain or nearby structures.

Autoimmune and Inflammatory Conditions

Rare inflammatory or autoimmune conditions can affect the pituitary gland and interfere with hormone production.

Congenital Causes

Some children are born with pituitary hypoplasia, pituitary stalk abnormalities, or genetic hormone deficiencies that may affect growth hormone production and normal growth patterns.

Brain Injury

Traumatic brain injuries may occasionally affect pituitary function and hormone production, potentially disrupting growth hormone release and contributing to growth-related concerns.

When Should Parents Seek a Growth Evaluation?

A pediatric growth evaluation may be appropriate if your child has:

A specialist evaluation can help determine whether a pituitary disorder or another condition may be contributing to the child’s growth concerns.

Medical References

Why Families Choose HGH for Children

HGH for Children evaluates children with Pituitary Disorders and related growth concerns, including Growth Hormone Deficiency, Low IGF-1, Delayed Bone Age, Delayed Puberty, Poor Growth Velocity, Constitutional Growth Delay, and Idiopathic Short Stature.

The evaluation considers the child’s overall growth picture rather than relying on a single symptom or laboratory result.

Frequently Asked Questions

Can pituitary disorders cause short stature?

Yes. Pituitary disorders affecting Growth Hormone production can contribute to Poor Growth Velocity, Delayed Bone Age, and Short Stature.

Does low IGF-1 mean my child has a pituitary disorder?

Not necessarily. Low IGF-1 can have several causes, including Growth Hormone Deficiency, delayed puberty, Constitutional Growth Delay, nutritional problems, and chronic medical conditions.

Does every child with suspected Growth Hormone Deficiency need a pituitary MRI?

No. MRI is considered based on the child’s clinical findings, hormone evaluation, and whether a structural abnormality is suspected.

Can pituitary disorders affect puberty?

Yes. The pituitary produces hormones involved in reproductive development, so certain pituitary disorders can contribute to delayed or abnormal pubertal development.

Can pituitary disorders be treated?

Many pituitary disorders can be managed with appropriate hormone replacement, growth hormone therapy when indicated, monitoring, or specialized treatment for structural conditions.

Schedule a Growth Consultation

If your child has abnormal growth, Low IGF-1, Delayed Bone Age, delayed puberty, or other findings that raise concern about pituitary function, a comprehensive evaluation can help clarify the next step.

HGH for Children can review growth history, Growth Velocity, Bone Age, hormone findings, and relevant medical history to determine whether further evaluation or treatment may be appropriate.