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Growth hormone deficiency - children
Pituitary dwarfism; Acquired growth hormone deficiency; Isolated growth hormone deficiency; Congenital growth hormone deficiency; Panhypopituitarism; Short stature - growth hormone deficiency
Growth hormone deficiency means the pituitary gland does not make enough growth hormone.
Causes
The pituitary gland is located at the base of the brain. This gland controls the body's balance of hormones. It also makes growth hormone. This hormone causes a child to grow.
Growth hormone deficiency may be present at birth. Growth hormone deficiency may be the result of a medical condition. Severe brain injury may also cause growth hormone deficiency.
Children with physical defects of the face and skull, such as cleft lip or cleft palate , may have decreased growth hormone level.
Cleft lip or cleft palate
Cleft lip and palate are birth defects that affect the upper lip and the roof of the mouth.
Most of the time, the cause of growth hormone deficiency is unknown.
Symptoms
Slow growth may first be noticed in infancy and continue through childhood. The pediatrician will most often draw the child's growth curve on a growth chart . Children with growth hormone deficiency have a slow or flat rate of growth. The slow growth may not show up until a child is 2 or 3 years old.
Growth chart
Growth charts are used to compare your child's height, weight, and head size against children of the same age. Growth charts can help both you and yo...
The child will be much shorter than most children of the same age and gender. The child will still have normal body proportions, but may be chubby. The child's face often looks younger than other children of the same age. The child will have normal intelligence in most cases.
In older children, puberty may come late or may not come at all, depending on the cause.
Exams and Tests
A physical exam, including weight, height, and body proportions, will show signs of slowed growth. The child will not follow the normal growth curves.
A hand x-ray can determine bone age. Normally, the size and shape of bones change as a person grows. These changes can be seen on an x-ray and they most often follow a pattern as a child grows older.
Testing is most often done after the pediatrician has looked into other causes of poor growth. Tests that may be done include:
-
Insulin-like growth factor 1 (IGF-1) and insulin-like growth factor binding protein 3 (IGFBP3). These are substances that growth hormones cause the body to make. Tests can measure these growth factors. Accurate growth hormone deficiency testing involves a
stimulation test
. This test takes several hours.
Stimulation test
The growth hormone (GH) stimulation test measures the ability of the body to produce GH.
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MRI
of the head can show the hypothalamus and pituitary glands.
MRI
A magnetic resonance imaging (MRI) scan is an imaging test that uses powerful magnets and radio waves to create pictures of the body. It does not us...
ImageRead Article Now Book Mark Article - Tests to measure other hormone levels may be done, because a lack of growth hormone may not be the only problem.
Treatment
Treatment involves growth hormone shots (injections) given at home. The shots are most often given once a day. Older children can often learn how to give themselves the shot.
Treatment with growth hormone is long-term, often lasting for several years. During this time, the child needs to be seen regularly by the pediatrician to ensure the treatment is working. If needed, the provider will change the dosage of the medicine.
Serious side effects of growth hormone treatment are rare. Common side effects include:
- Headache
- Fluid retention
- Muscle and joint aches
- Slippage of the hip bones
Outlook (Prognosis)
The earlier the condition is treated, the better the chance that a child will grow to near-normal adult height. Many children gain 4 or more inches (about 10 cm) during the first year, and 3 or more inches (about 7.6 cm) during the next 2 years. The rate of growth then slowly decreases.
Growth hormone therapy does not work for all children.
Left untreated, growth hormone deficiency may lead to short stature and delayed puberty.
Growth hormone deficiency can occur with deficiencies of other hormones such as those that control:
- Production of thyroid hormones
- Water balance in the body
- Production of male and female sex hormones
-
The
adrenal glands
and their production of cortisol, DHEA, and other hormones
Adrenal glands
The adrenal glands are two triangle-shaped glands. One gland is located on top of each kidney.
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When to Contact a Medical Professional
Call your provider if your child seems abnormally short for his or her age.
Prevention
Most cases are not preventable.
Review your child's growth chart with the pediatrician at each checkup. If there is concern about your child's growth rate, evaluation by a specialist is recommended.
References
Cooke DW, Divall SA, Radovick S. Normal and aberrant growth in children. In: Melmed S, Polonsky KS, Larsen PR, Kronenberg HM, eds. Williams Textbook of Endocrinology . 13th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 24.
Parks JS, Felner EI. Hypopituitarism. In: Kliegman RM, Stanton BF, St Geme JW, Schor NF, eds. Nelson Textbook of Pediatrics . 20th ed. Philadelphia, PA: Elsevier; 2016:chap 557.
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Endocrine glands - illustration
Endocrine glands release hormones (chemical messengers) into the bloodstream to be transported to various organs and tissues throughout the body. For instance, the pancreas secretes insulin, which allows the body to regulate levels of sugar in the blood. The thyroid gets instructions from the pituitary to secrete hormones which determine the pace of chemical activity in the body (the more hormone in the bloodstream, the faster the chemical activity; the less hormone, the slower the activity).
Endocrine glands
illustration
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Height/weight chart - illustration
A chart may be used to measure and compare a child's growth to a standard range. The parameters to be measured and charted are height, weight, and head circumference.
Height/weight chart
illustration
-
Endocrine glands - illustration
Endocrine glands release hormones (chemical messengers) into the bloodstream to be transported to various organs and tissues throughout the body. For instance, the pancreas secretes insulin, which allows the body to regulate levels of sugar in the blood. The thyroid gets instructions from the pituitary to secrete hormones which determine the pace of chemical activity in the body (the more hormone in the bloodstream, the faster the chemical activity; the less hormone, the slower the activity).
Endocrine glands
illustration
-
Height/weight chart - illustration
A chart may be used to measure and compare a child's growth to a standard range. The parameters to be measured and charted are height, weight, and head circumference.
Height/weight chart
illustration
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Anemia
(In-Depth)
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Iron
(Alt. Medicine)
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Hypothyroidism
(In-Depth)
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Vitamins
(In-Depth)
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Iodine
(Alt. Medicine)
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Hypothyroidism
(Alt. Medicine)
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Rubella
(Alt. Medicine)
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Magnesium
(Alt. Medicine)
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Omega-3 fatty acids
(Alt. Medicine)
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Osteoporosis
(In-Depth)
Review Date: 2/15/2016
Reviewed By: Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of Pediatrics, University of Washington School of Medicine, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.
