Normal newborn need for contact and warmth – many babies settle when they feel a parent's heartbeat, warmth, and movement.
Inadequate feeding or frequent hunger – assess weight gain, urine output (≥6 wet diapers/day after the first week), and feeding effectiveness.
Gastroesophageal reflux (GER) – babies with reflux may be more comfortable upright or prone on a caregiver's chest.
Infantile colic/gassiness – usually begins around 2–3 weeks of age, but colic typically causes crying episodes rather than refusal to sleep on a flat surface all day.
Nasal blockage, cow's milk protein allergy, constipation, or other discomforts.
Less commonly, illness (infection, fever, urinary infection, etc.).
Answered2026-06-01 10:33:20
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