Night Sweats in Babies & Toddlers
Content reviewed against published AAP, NHS, Mayo Clinic guidelines
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Night sweats in babies and toddlers — waking with damp hair, clothing, or bedding from sweating — are very common and usually caused by the baby being too warm (over-bundled) or by the natural deep sleep cycle. Babies have immature temperature regulation and sweat heavily in deep sleep, especially on the head. While usually benign, persistent drenching night sweats with other symptoms (fever, weight loss, pain) should be evaluated.
Key takeaways
- Night sweats in babies and toddlers — waking with damp hair, clothing, or bedding from sweating — are very common and usually caused by the baby being too warm (over-bundled) or by the natural deep sleep cycle.
- Most common cause: Over-bundling or overheated room
- Emergency: Night sweats with breathing difficulty, blue color, or unresponsiveness
- Home care: Check room temperature: ideal is 68-72F (20-22C) for sleeping babies
Possible Causes
When to Seek Help
Emergency — Call 911 or go to ER:
- Night sweats with breathing difficulty, blue color, or unresponsiveness
- Profuse sweating with lethargy and inability to rouse baby
- Sweating with seizure-like activity
Urgent — See doctor today:
- Night sweats with persistent unexplained fever and weight loss
- Night sweats with progressive breathing difficulty or rapid breathing
- Night sweats with significant pallor, bruising, or bone pain
- Profuse sweating during every feed with poor weight gain in young infant (cardiac evaluation)
Same-day appointment:
- Persistent nightly drenching sweats not explained by environment
- Night sweats with snoring and witnessed apneas (sleep apnea evaluation)
- Night sweats with persistent fatigue, appetite loss, or declining activity
- Night sweats with enlarged lymph nodes
Monitor at home:
- Mild head sweating during deep sleep in well child (very common and normal)
- Sweating during illness that resolves when infection clears
- Sweating related to room temperature or over-bundling (resolves with adjustment)
- Sweating associated with night terrors in toddler (otherwise well)
By Age
0-2 months
Normal: Newborns have immature thermoregulation and can sweat heavily, especially on the head during deep sleep. Sweating during feeds (particularly with breastfeeding due to body warmth) is common.
Worry if: Profuse sweating during feeding with fast breathing and poor weight gain (heart disease). Sweating with blue color around lips (cyanotic heart disease). Sweating with tremors or irritability followed by improvement with feeding (hypoglycemia). Drenching sweats with fever and poor feeding.
2-6 months
Normal: Head sweating during sleep remains very common. Sweating more in warm environments. Brief sweating when fevering during illness (breaking fever).
Worry if: Consistent sweating during feeds with slow weight gain (cardiac concern). Night sweats with persistent cough (rare in this age but tuberculosis exposure). Sweating with persistent fast breathing at rest.
6-12 months
Normal: Deep sleep sweating continues to be common, especially on head and neck. Sweating more during active sleep (REM) phases. Teething can mildly increase sweating.
Worry if: Night sweats with snoring and pauses in breathing (sleep apnea). Night sweats with unexplained weight loss. Drenching sweats that soak through clothing/sheets nightly. Night sweats with persistent fevers and fatigue.
1-3 years
Normal: Many toddlers sweat during deep sleep (first 1-2 hours of night). Night terrors (screaming, confused arousal) commonly cause sweating. Being too warm in bed with too many blankets.
Worry if: Drenching night sweats with weight loss and persistent low fevers (lymphoma B symptoms). Night sweats with loud snoring, mouth breathing, and apnea (obstructive sleep apnea). Night sweats with bone pain or unusual bruising. Night sweats with persistent or recurrent fever without clear cause.
Home Care
- Check room temperature: ideal is 68-72F (20-22C) for sleeping babies
- Dress baby in one layer more than you would wear — avoid over-bundling
- Use breathable cotton sleepwear rather than synthetic materials
- Use a light sleep sack instead of heavy blankets (blankets are unsafe under 12 months anyway)
- Keep the room well-ventilated with air circulation
- Place a muslin cloth under baby's head to absorb sweat (change if damp)
- If sweating occurs only in deep sleep (first 1-2 hours) and baby is otherwise well, this is normal
- Monitor for pattern: is sweating every night or only during illness?
- Note any associated symptoms: snoring, fever, weight change, pain
- If night sweats persist despite appropriate sleeping environment, discuss with pediatrician
Frequently asked questions
What causes night sweats?
When is this an emergency?
What can I do at home?
When should I call the doctor?
Sources
All content follows our editorial policy and is reviewed against published clinical guidelines.
2,705 evidence-based guides6 authoritative medical sources
Related Symptoms
Bottom line
Most cases of night sweats in babies are not emergencies. However, seek immediate care if night sweats with breathing difficulty, blue color, or unresponsiveness.
Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.