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Warning signs

Warning signs by age — when it's normal variation and when it warrants evaluation. Early detection profoundly changes outcomes in several conditions.

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Vaccination — one of the largest public-health interventions in history
How they work, why so early, and how to read the scientific literature through the noise
Parents — mental health and adaptation
Babies don't need perfect mothers; they need regulated caregivers — and caregiver regulation is a measured clinical variable
Infant colic — what it is, what it isn't, and what has evidence
A benign, self-limiting syndrome that wrecks parents' sleep. Peak at 6-8 weeks, resolves around 3-4 months. Few interventions have evidence — but some do
Warning signs
When to see the pediatrician — quick reference by age