Keep a newborn’s sleep space about 20–22 °C (68–72 °F), or a temperature comfortable for a lightly clothed adult, to reduce overheating risk.

Newborns see best at about 8–12 inches (20–30 cm); beyond that, details stay blurry in the first weeks.

Newborn illness shows in feeding or diaper changes, fever or low temp, breathing trouble, blue or pale skin, limpness, or unusual sleepiness.

Newborn vision is sharpest at about 8–12 inches; beyond that, newborn sight looks blurry as focus and tracking mature over the first months.

Use a clean, damp gauze or cloth to gently wipe your newborn’s tongue after feeds; no scrapers or paste, just soft sweeps once or twice daily.

Use sterile saline, then gently suction a newborn’s nose with a bulb or aspirator; keep sessions brief and stop if you see blood.

Watch for few wet diapers, dark yellow urine, dry mouth, no tears, a sunken soft spot, poor feeding, sleepiness, or fast breathing in a newborn.

Diagnosis is confirmed by a chromosome test; early signs include low muscle tone, flat facial profile, and upward-slanting eyes.

Newborn poop usually follows feeding; gentle moves like tummy massage, bicycle legs, a warm bath, and good feeding help the bowels work.

Newborn reflux shows as spit-ups, feed fussiness, back-arching, cough or gag during feeds, and poor weight gain—see a doctor if symptoms escalate.