Pediatrics Mnemonics: Congenital Syndromes, Growth Milestones, and Newborn Conditions

A ValueMD community study resource, originally shared on our forums and preserved here for students working through pediatrics on Step 2 CK and clinical rotations.

Pediatrics covers an unusually wide range of material in a short rotation: congenital syndromes, growth and development benchmarks, neonatal screening, and pediatric-specific presentations of common conditions. The mnemonics below were contributed by the ValueMD student community to help organize that range.

Educational note: these are student-built memory aids for exam review, not a substitute for your pediatrics textbook or clinical guidelines. A few entries below have been corrected, deduplicated, or clarified from the original forum thread for accuracy.

Infectious Disease

Measles: Complications

MEASLES COMP: Myocarditis, Encephalitis, Appendicitis (or appendicitis-mimicking mesenteric lymphadenitis), Subacute sclerosing panencephalitis, Laryngitis, Early death, Diarrhea, Corneal ulcer, Otitis media, Mesenteric lymphadenitis, Pneumonia and related airway complications (bronchiolitis, bronchitis, croup).

Congenital Rubella Syndrome

“Rubber Ducky, I’m so blue”:

• Rubber: Rubella
• Ducky: Cardiac defects, classically patent ductus arteriosus, along with VSD and pulmonary artery stenosis
• I’m: Eye findings (cataracts, retinopathy, microphthalmia, glaucoma)
• Blue: “Blueberry muffin” rash (extramedullary hematopoiesis presenting as purpura in the skin)

Also expect sensorineural deafness and growth retardation; deafness, cataracts, and cardiac defects together are classically known as the Gregg triad.

Congenital Syndromes

Sturge-Weber Syndrome

Hallmark features: Seizures and a Port-wine stain (facial capillary malformation), reflecting the underlying leptomeningeal angiomatosis.

VACTERL Association

• Vertebral anomalies
• Anorectal malformation (imperforate anus)
• Cardiac anomaly
• Tracheoesophageal fistula
• Esophageal atresia
• Renal anomalies
• Limb anomalies

Ataxia-Telangiectasia

Common associated finding, remembered as AT: Absent Thymus (contributing to combined immunodeficiency, alongside the namesake ataxia and telangiectasia).

Williams Syndrome: WILLIAMS

• Weight low at birth, slow to gain
• Iris: stellate (starburst) pattern
• Long philtrum
• Large mouth
• Increased calcium (hypercalcemia)
• Aortic stenosis (classically supravalvular) and other stenoses
• Mental impairment
• Swelling around the eyes (periorbital puffiness)

Russell-Silver Syndrome: ABCDEF

• Asymmetric limb growth (hemihypertrophy)
• Bossing (frontal)
• Clinodactyly and cafe-au-lait spots
• Dwarfism (short stature)
• Excretory system abnormalities (GU malformations)
• Face: triangular, with micrognathia

WAGR Syndrome

• Wilms tumor
• Aniridia
• Genital abnormalities
• Range of intellectual disability

Cardiology

Cyanotic Congenital Heart Disease: The 5 T’s

• Truncus arteriosus
• Transposition of the great arteries
• Tricuspid atresia
• Tetralogy of Fallot
• Total anomalous pulmonary venous return

A hand trick for the same list: hold up one finger for Truncus arteriosus (1 vessel), two for Transposition of the great arteries (2 vessels swapped), three for Tricuspid atresia (tri = 3), four for Tetralogy of Fallot (tetra = 4), and five for Total anomalous pulmonary venous return (5 words in the name).

Respiratory

Croup: The 3 S’s

Stridor, Subglottic swelling, Seal-bark cough.

Chronic Cough in Infancy: CRADLE

• Cystic fibrosis
• Rings, slings, and airway things (vascular rings, tracheal anomalies) or Respiratory infections
• Aspiration (swallowing dysfunction, TE fistula, gastroesophageal reflux)
• Dyskinetic cilia
• Lung, airway, and vascular malformations (tracheomalacia, vocal cord dysfunction)
• Edema (from heart failure)

Cystic Fibrosis: Presenting Signs (CF PANCREAS)

• Chronic cough and wheezing
• Failure to thrive
• Pancreatic insufficiency (steatorrhea and other malabsorption symptoms)
• Alkalosis and hypotonic dehydration
• Neonatal intestinal obstruction (meconium ileus) or Nasal polyps
• Clubbing of fingers or Characteristic chest radiograph changes
• Rectal prolapse
• Elevated electrolytes in sweat (salty-tasting skin)
• Absence or congenital atresia of the vas deferens
• Sputum with Staph or Pseudomonas (mucoid)

Cystic Fibrosis: Signs of a Pulmonary Exacerbation (also CF PANCREAS)

This is a separate mnemonic that reuses the same letters for a different purpose, signs that a CF patient’s lung disease is flaring, rather than initial diagnostic signs:

• Cough increasing in intensity and frequency
• Fever, usually low-grade unless severe bronchopneumonia is present
• Pulmonary function deterioration
• Appetite decrease
• Nutrition and weight loss
• CBC showing leukocytosis with left shift
• Radiograph showing increased overaeration, peribronchial thickening, mucus plugging
• Exam findings of rales or wheezing in previously clear lung areas, tachypnea, retractions
• Activity decreased, with impaired exercise tolerance
• Sputum becoming darker, thicker, more abundant, and forming plugs

Gastrointestinal

Duodenal Atresia vs. Pyloric Stenosis: Site of Obstruction

Duodenal atresia occurs distal to the ampulla of Vater, which is why it classically presents with bilious vomiting. Pyloric stenosis occurs proximal to the ampulla, which is why it presents with non-bilious, projectile vomiting.

Pyloric Stenosis: The 3 P’s

Palpable olive-shaped mass, visible Peristalsis, Projectile vomiting (typically presenting 2 to 4 weeks after birth).

Gastroschisis: Usual Location

Gastroschisis typically occurs to the right of the umbilicus, unlike omphalocele, which occurs at the umbilical ring itself.

Short Stature: Differential (ABCDEFG)

• Alone (psychosocial deprivation/neglect)
• Bone dysplasias (rickets, skeletal dysplasias, mucopolysaccharidoses)
• Chromosomal (Turner syndrome, Down syndrome)
• Delayed growth (constitutional growth delay)
• Endocrine causes (growth hormone deficiency, Cushing syndrome, hypothyroidism)
• Familial short stature
• GI malabsorption (celiac disease, Crohn’s disease)

Renal and Hematology

Hemolytic Uremic Syndrome (HUS)

“Decrease the RATE of IV fluids”: Renal failure, Anemia (microangiopathic hemolytic anemia), Thrombocytopenia, Encephalopathy (a feature that overlaps with TTP).

Hematuria in Children: Differential (ABCDEFGHIJK)

• Anatomic causes (cysts, and similar structural issues)
• Bladder (cystitis)
• Cancer (Wilms tumor)
• Drug-related (e.g., cyclophosphamide)
• Exercise-induced
• Factitious (including Munchausen by proxy)
• Glomerulonephritis
• Hematologic (bleeding disorders, sickle cell disease)
• Infection (UTI)
• Injury (trauma)
• Kidney stones (hypercalciuria)

Newborn Screening and Neonatology

Newborn Screening (Guthrie Card)

“Guthrie Cards Can Help Predict Bad Metabolism”: Galactosemia, Cystic fibrosis, Congenital adrenal hyperplasia, Hypothyroidism, Phenylketonuria, Biotinidase deficiency, Maple syrup urine disease. A shorter alternate version, GUTHRIE, covers Galactosemia, Urine findings in maple syrup urine disease, THyRoid (hypothyroidism), and Inborn errors of metabolism (like PKU). Modern newborn screening panels test for considerably more conditions than either mnemonic captures.

Bilirubin and Phototherapy

Bilirubin absorbs light most strongly in the blue range, which is why phototherapy for neonatal jaundice uses blue-spectrum light.

Vitamin Toxicities in Neonates

• Excess Vitamin A: teratogenic anomalies
• Excess Vitamin E: linked to necrotizing enterocolitis, particularly in preterm infants
• Excess Vitamin K: kernicterus, from hemolysis and resulting hyperbilirubinemia

The Perez Reflex

Stroking a prone infant’s spine from the sacrum toward the neck elicits crying, back arching, limb flexion, and often urination, remembered simply as “the Perez reflex will make the baby pee.”

Growth, Development, and Nutrition

Head Circumference by Age (Approximate Rule of Thumb)

Remember the numbers 3, 9, and multiples of 5:

Weight by Age (Approximate Rule of Thumb)

These are rough teaching approximations rather than precise growth-chart values for any individual child.

Permanent Tooth Eruption

“Mama Is In Pain, Papa Can Make Medicine”, approximate ages:

Pediatric Developmental Milestones

• 1 year: single words
• 2 years: two-word sentences; understands two-step commands
• 3 years: three-word combinations; repeats three digits; rides a tricycle
• 4 years: draws a square; counts four objects

Breastfeeding: Benefits (ABCDEFGH)

For the infant: Allergic conditions reduced, Best food for the infant, Close bonding with mother, Development of IQ, jaw, and mouth structure.

For the mother: Economical, Fitness and quicker return to pre-pregnancy body shape, Guards against breast, ovarian, and uterine cancer, Hemorrhage (postpartum) reduced.

Milk Protein: Human Milk vs. Cow’s Milk

Human milk is predominantly whey; cow’s milk is predominantly casein.

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Frequently Asked Questions

1. What are the 5 T’s of cyanotic congenital heart disease?
   Truncus arteriosus, Transposition of the great arteries, Tricuspid atresia, Tetralogy of Fallot, and Total anomalous pulmonary venous return.
2. What’s included in the VACTERL association?
   Vertebral anomalies, Anorectal malformation, Cardiac anomaly, Tracheoesophageal fistula, Esophageal atresia, Renal anomalies, and Limb anomalies.
3. How can you tell duodenal atresia from pyloric stenosis? Duodenal atresia occurs distal to the ampulla of Vater and presents with bilious vomiting. Pyloric stenosis occurs proximal to the ampulla and presents with non-bilious, projectile vomiting, usually two to four weeks after birth.
4. What conditions does a Guthrie card newborn screen check for? Classic mnemonics cover galactosemia, cystic fibrosis, congenital adrenal hyperplasia, hypothyroidism, phenylketonuria, biotinidase deficiency, and maple syrup urine disease, though modern expanded newborn screening panels test for many more conditions than these mnemonics capture.

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Want to Know More?

These are just a few of the mnemonics our community has put together across pediatrics, congenital syndromes, and newborn care. Visit our USMLE student community to find more, share your own, or ask a question about a topic you’re stuck on.