Birth Weight (2.5 - 4.5) that is below the 10th percentile for a given gestational age. This means that the baby's weight is lower than 90% of babies at the same gestational age

*Microsomia: Typically defined by an absolute birth weight threshold, regardless of gestational age. The most commonly used thresholds are a Birth Weight (2.5 - 4.5) less than 2500 g

Approach

Focused Hx

Physical Exams

Algorithm (Diagram)

Etiology DDx → Key Investigations

*NOTE: this does not include Mimiker DDx. Open the disease sub-page to check for those

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!Red Flag (must not miss)

These are conditions that are emergently life-threatening or have severe consequences w/t early treatment

Key Red Flags	Condition	RF


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IUGR/FGR

Prematurity

Empiric or Symptom Management