Overview
The jerks happen only during sleep and stop when the baby is woken.
Babies are otherwise healthy and develop normally.
Symptoms
Common signs:
- Jerks during sleep in a newborn
Less common
- Jerks stop when the baby is woken
When to get medical care
Call 911Jerks while awake or with blue color.
Get care todayNew or worse symptoms, or symptoms with fever.
See a doctor soonSymptoms that last or keep coming back.
Causes
Normal development.
Does it spread or run in families?
- It isn't contagious. You can't catch it from someone else.
Who is more likely to get it
- Newborns
Diagnosis
A clinician asks about your symptoms and may order tests.
The exam
A physical exam.
Tests
Tests, if needed:
- Exam:
Treatment
Treatment depends on the cause and how severe it is.
Self-care
- Don't hold the limbs
Prevention
To lower your risk or prevent problems:
- There is no known way to prevent it. Early checkups help find it sooner.
Which doctor treats this
- Start with your child's pediatrician.
- A physical therapist can help with exercises to rebuild strength and motion.
Children, pregnancy, and older adults
- Newborns: Starts in the first weeks.
For caregivers
- Learn the warning signs and when to call the doctor or 911.
- Keep a list of your child's medicines, doses, and doctors on your phone.
- Tell teachers, coaches, and sitters what to watch for and what to do.
- Take breaks and ask for help. Caregivers need care too.
Outlook
Outgrown by 3 to 6 months.
Getting ready for your visit
Bring a list of your symptoms and medicines.
What to bring
- A list of your medicines and supplements
- Notes on when symptoms started and what makes them better or worse
Questions to ask
- What's causing this?
- What treatment do you recommend?
Research studies
Research studies test new ways to find and treat health problems. Some are looking for volunteers. Talk with your doctor before joining one.
Sources
Last updated 2026-11-12.