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Q: Why do babies jerk and twitch?

Posted by on May. 26, 2011 at 9:52 PM
  • 11 Replies

A: Newborns have more synapses, or connections, in their nervous system than adults do, which makes them more sensitive to their environment, says Romi Webster, a pediatrician at Children's Hospital Boston. This is the main reason why your newborn startles and twitches so easily at a sudden movement or loud sound. Young babies also have increased tone in their flexor muscles – if you extend your baby's leg, for example, it will likely jerk back into a bent position. This heightened muscle tone decreases over the first nine months of life, at the same time that motor coordination improves, allowing your baby smoother movements as he grows. Keep an eye out for startling that continues much beyond 4 to 6 weeks, says Webster, or excessive twitching that can't be stopped by putting your hand on the shaking limb. In those cases, it's advisable to take your baby to a doctor to make sure there's not an issue needing medical attention.


Does your baby ever jerk and twitch?




by on May. 26, 2011 at 9:52 PM
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Replies (1-10):
alandou
by April on May. 26, 2011 at 10:08 PM

dd only does this right after she has fallen asleep

Honeybun09
by on May. 26, 2011 at 10:12 PM

I never noticed either of my children jerk and twitch!




lauratupper
by on May. 26, 2011 at 10:21 PM

i noticed it when he was a newborn...i don't notice it anymore though.

Honeybun09
by on May. 26, 2011 at 10:26 PM

Come to think of it, I think Emilio did when he was less than a week old.

Quoting lauratupper:

i noticed it when he was a newborn...i don't notice it anymore though.





stormystar15
by on May. 26, 2011 at 10:32 PM
My oldest didnt but my 4 month old had a immature nervous system so his arms and legs twitched and had involentary shaking a lot over the first 2 months and doesnt now.
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Blue_Spiral
by on May. 26, 2011 at 10:36 PM

Heck yes, he does.

He gets most startled by burps, hiccups and toots. LOL

Bodily noises are apparently scarier than motorcycles, loud thuds, lawnmowers, gunshots on TV, etc. etc.

I think it's pretty funny.

toughnsweet
by on May. 26, 2011 at 10:36 PM
All three of mine did.
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Honeybun09
by on May. 26, 2011 at 10:37 PM

LOL

Quoting Blue_Spiral:

Heck yes, he does.

He gets most startled by burps, hiccups and toots. LOL

Bodily noises are apparently scarier than motorcycles, loud thuds, lawnmowers, gunshots on TV, etc. etc.

I think it's pretty funny.





mommy2xp
by on May. 26, 2011 at 11:07 PM

 dd did when she was really new

la_bella_vita
by Bella on May. 27, 2011 at 11:26 AM

 Interesting

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