II. Epidemiology

  1. Incidence: 1 in 3,000 to 9,000 children with Short Stature

III. Causes

IV. Signs: Congenital GH Deficiency (newborns)

  1. Normal size at birth
    1. Subsequently falls off height growth curve
    2. Weight for age is preserved
  2. Episodic Hypoglycemia
  3. Prolonged Neonatal Jaundice
  4. Microphallus
  5. Midline craniofacial abnormalities (e.g. Cleft Lip)

V. Signs: Acquired

  1. Children
    1. Normal initial growth until onset of GH Deficiency
    2. Progressive Growth Delay (depending on severity)
  2. Adults
    1. Fatigue
    2. Decreased Muscle mass and strength
    3. Increased visceral fat
    4. Premature atherosclerosis

VI. Imaging

VII. Labs (in Consultation with pediatric endocrinology)

  1. Screening
    1. Insulinlike Growth Factor 1 (IGF-1)
    2. Insulinlike Growth Factor binding Protein 3
  2. Diagnosis
    1. Negative Growth Hormone provocation test
    2. Pituitary Function Tests

VIII. Management

  1. Pediatric Endocrinology referral
  2. Recombinant Growth Hormone injections daily

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