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When Should I Worry About My Baby’s Movements?

It can be difficult to know if your baby is moving the same way as other babies their age. Babies grow and learn in their own time, but sometimes there are signs (called “red flags”) that mean you need to speak to a professional for advice.

It’s not always helpful to compare one baby to another. Some things, like being born early, an illness, medical condition or an injury can affect your baby’s development. If your baby has had any of these, you can talk to your GP, health visitor, or specialist about what to expect.

In the next section we look at how babies move and develop, and highlight “red flags.” If something doesn’t feel right about how your baby moves, even if you’re not sure, talk to your health visitor or GP. It’s always best to check.

How Babies Move and Develop

Very young babies

  • Babies are born with a “Startle Reflex.” This means they stretch their arms and legs out when they hear a loud noise or get surprised by a sudden movement. This reflex starts to go away from about 6 weeks of age and usually disappears by 6 months.
  • Babies are also born with a “Grasp Reflex.” This is when you place a finger or small object in the middle of their hand and their hand closes. This reflex starts to go away from about 6 months.

At any age

  • Babies usually move both sides of their body equally and can do the same things with both sides. For example: they can pick up a toy with either hand and put it in their mouth.
  • As babies grow, they begin to make lots of little movements with their body, arms, legs, hands, feet and head. As they continue to grow, they can control their movements better.
  • As babies grow and develop strength, they usually begin to “help” you hold them. For example, when you cuddle them, they cuddle back into you.
  • Sometimes a baby can become stiff, for example, when being changed, or doing something they do not like. When this happens, with gentle pressure, you should still be able to move your baby’s arms or legs, and once settled, they relax again.
  • As babies develop more control over their movements, they can move easily from one position or movement to another.

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When should you worry?

Red flags at any age:

Talk to a doctor straight away if your baby:

  • Stops doing something they used to do, or you think they have forgotten how.
  • Feels very stiff most of the time. They may hold their arms and legs in the same position, such as always pulling their arm into their chest, or always crossing their legs. Your baby may find it difficult to change their position on their own. You may also find it difficult to move your baby’s arms and legs.
  • Feels very floppy, or has floppy arms or legs when awake.
  • Moves their arms and legs in jerky or strange ways.

Remember, if your baby was born prematurely then you will need to use their corrected age. This is their actual age minus the number of weeks they were born early. You only need to do this if your baby was more than 3 weeks early. For more information about development of a preterm baby visit Bliss.

Newborn

NEWBORN

Contact your health visitor or GP if your baby is newborn and they…

  • Feel very stiff, for example:
    • Hold their arms and legs in the same position, such as always pulling their arm into their chest, or always crossing their legs 
    • Find it difficult to change their position on their own 
    • You may also find it difficult to move your baby’s arms or legs, making it tricky to change their nappy or clothes
  • Feel very floppy, or have floppy arms or legs when awake
  • Move their arms and legs in repetitive jerky movements, or writhing movements
  • Don’t have a Grasp Reflex (doesn’t grab your finger or small object when you put it in their hand)
  • Are often startling and you cannot understand why
  • Move one side of their body more than the other, for example:
    • Rarely moves one of their arms compared to the other arm
    • Rarely moves one leg compared to the other leg
    • When your baby startles, one side moves or looks different from the other

6-8 weeks 

6-8 WEEKS

Contact your health visitor or GP if your baby is 6-8 weeks and they…

  • Feel very stiff, for example:
    • Hold their arms and legs in the same position, such as always pulling their arm into their chest, or always crossing their legs 
    • Find it difficult to change their position on their own
    • You may also find it difficult to move your baby’s arms or legs, making it tricky to change their nappy or clothes
  • Feel very floppy, or have floppy arms or legs when awake
  • Move their arms and legs in repetitive jerky movements, or writhing movements
  • Have not started to bring both their hands to their face, or do not move their arms much
  • Keep their hands fisted, and you find it difficult to open their hands
  • Can’t lift their head when lying on their tummy
  • Move one side of their body more than the other, for example:
    • Mostly moves one arm or mostly brings one hand to their face
    • Rarely kicks or moves one leg compared to the other leg

2-3 months

2-3 MONTHS

Contact your health visitor or GP if your baby is 2-3 months and they…

  • Feel very stiff, for example:
    • Hold their arms and legs in the same position, such as always pulling their arm into their chest, or always crossing their legs
    • Find it difficult to change their position on their own
    • You may also find it difficult to move your baby’s arms or legs, making it tricky to change their nappy or clothes
  • Feel very floppy, or have floppy arms or legs when awake
  • Move their arms and legs in repetitive jerky movements, or writhing movements
  • Have not started to bring both their hands to their face, or do not move their arms much
  • Keep their hands fisted, and you find it difficult to open their hands
  • Can’t lift their head when lying on their tummy
  • Move one side of their body more than the other, for example:
    • Mostly moves one arm or mostly brings one hand to their face
    • Rarely kicks or moves one leg compared to the other leg

3-4 months

3-4 MONTHS

Contact your health visitor or GP if your baby is 3-4 months and they…

  • Have lost skills which they could do before
  • Feel very stiff, for example:
    • Hold their arms and legs in the same position, such as always pulling their arm to their chest, or always crossing their legs
    • Find it difficult to change their position on their own
    • You find it difficult to move your baby’s arms or legs, making it tricky to change their nappy or clothes
  • Feel very floppy when awake
  • Prefer to keep their arms by their sides. For example, they do not reach for things, or do not bring their hands together over their face or tummy
  • Move their arms or legs in repetitive, jerky, or strange ways
  • Still need you to support their head, or can’t lift their head when lying on their tummy 
  • Have very tight fists and it’s hard to open their hand
  • Move one side of their body more than the other, for example:
    • Rarely use one of their arms to pick up toys 
    • Rarely kick one leg compared to the other

4-6 months

4-6 MONTHS

Contact your health visitor or GP if your baby is 4-6 months and they…

  • Have lost skills which they could do before
  • Feel very stiff, for example:
    • Hold their arms and legs in the same position, such as always pulling their arm to their chest, or always crossing their legs
    • Find it difficult to change their position on their own
    • You find it difficult to move your baby’s arms or legs, making it tricky to change their nappy or clothes
  • Feel very floppy when they are awake
  • Move their arms or legs in repetitive, jerky, or strange ways
  • Move one side of their body more than the other, for example:
    • Rarely use one of their arms to pick up toys 
    • Rarely kick one leg compared to the other
  • Are unable to roll, or can roll in one direction but not the other
  • Find it difficult to reach their arms out. For example, they do not reach for toys
  • Still have their early reflexes, like the startle reflex and grasp reflex
  • Keep their legs flat when lying on their back. For example, they do not bring their feet to their chest
  • Still need you to support their head

6-9 months

6-9 MONTHS

Contact your health visitor or GP if your baby is 6-9 months and they…

  • Have lost skills which they could do before
  • Feel very stiff, for example:
    • Hold their arms and legs in the same position, such as always pulling their arm to their chest, or always crossing their legs
    • Find it difficult to change their position on their own
    • You find it difficult to move your baby’s arms or legs, making it tricky to change their nappy or clothes
  • Feel very floppy when they are awake
  • Move their arms or legs in repetitive, jerky or strange ways
  • Move one side of their body more than the other, for example:
    • Rarely use one of their arms to pick up toys, or eat and drink
    • Rarely kick one leg compared to the other
  • Can’t sit without support. For example, they lean on their hand, or, when they sit, their back is very curved
  • Still have their early reflexes, like the startle reflex and grasp reflex
  • Keep their legs flat when lying on their back, for example, do not bring their feet to their chest
  • Still need you to support their head
  • Still need you to help turn their head when lying on their back
  • Can’t crawl, or find it hard, for example, drags one of their legs behind them
  • Find it difficult to stand, for example:
    • Can’t stand with support 
    • Doesn’t try to pull themselves up to stand
  • Can’t move a toy from one hand to the other
  • Doesn’t use both hands to hold larger things

9-12 months

9-12 MONTHS

Contact your health visitor or GP if your baby is 9-12 months and they…

  • Have lost skills which they could do before
  • Feel very stiff, for example:
    • Hold their arms and legs in the same position, such as always pulling their arm to their chest, or always crossing their legs
    • Find it difficult to change their position on their own 
    • You find it difficult to move your baby’s arms or legs, making it tricky to change their nappy or clothes
  • Feel very floppy when they are awake
  • Move their arms and legs in repetitive, jerky, or strange ways
  • Use one side of their body more than the other, for example:
    • Lean to the side when they sit
    • Use one arm to pull to stand more than the other
    • Rarely use one of their arms to pick up toys, or eat and drink. 
    • Rarely kick one leg compared to the other 
  • Find it difficult to sit, for example:
    • Only sit with support
    • Lean on their hand when sitting
    • When they sit their back is very curved
  • Can’t move a toy from one hand to the other
  • Don’t use both hands to hold larger things
  • Don’t point to objects
  • Can’t crawl, or find it hard, for example, drags one leg behind them
  • Find it difficult to stand, for example:
    • Can’t pull themselves up to stand
    • Find it hard to pull themselves up. For example, they only use their arms and don’t push with their legs
    • Can’t stand with support

2 months

Your Baby By Two Months

Social/Emotional Milestones

  • Calms down when spoken to or picked up
  • Looks at your face
  • Seems happy to see you when you walk up to her
  • Smiles when you talk to or smile at her

Language/Communication Milestones

  • Makes sounds other than crying
  • Reacts to loud sounds

Cognitive Milestones (learning, thinking, problem-solving)

  • Watches you as you move
  • Looks at a toy for several seconds

Movement/Physical Development Milestones

  • Holds head up when on tummy
  • Moves both arms and both legs
  • Opens hands briefly

4 months

Your Baby By Four Months

Social/Emotional Milestones

  • Smiles on his own to get your attention
  • Chuckles (not yet a full laugh) when you try to make him laugh
  • Looks at you, moves, or makes sounds to get or keep your attention

Language/Communication Milestones

  • Makes sounds like “oooo”, “aahh” (cooing)
  • Makes sounds back when you talk to him
  • Turns head towards the sound of your voice

Cognitive Milestones (learning, thinking, problem-solving

  • If hungry, opens mouth when he sees breast or bottle
  • Looks at her hands with interest

Movement/Physical Development Milestones

  • Holds head steady without support when you are holding him
  • Holds a toy when you put it in his hand
  • Uses his arm to swing at toys
  • Brings hands to mouth
  • Pushes up onto elbows/forearms when on tummy

6 months

Your Baby By Six Months

Social/Emotional Milestones

  • Knows familiar people
  • Likes to look at self in a mirror
  • Laughs

Language/Communication Milestones

  • Takes turns making sounds with you
  • Blows “raspberries” (sticks tongue out and blows)
  • Makes squealing noises

Cognitive Milestones (learning, thinking, problem-solving)

  • Puts things in her mouth to explore them
  • Reaches to grab a toy she wants
  • Closes lips to show she doesn’t want more food

Movement/Physical Development Milestones

  • Rolls from tummy to back
  • Pushes up with straight arms when on tummy
  • Leans on hands to support herself when sitting

9 months

Your Baby By Nine Months

Social/Emotional Milestones

  • Is shy, clingy, or fearful around strangers
  • Shows several facial expressions, like happy, sad, angry, and surprised
  • Looks when you call her name
  • Reacts when you leave (looks, reaches for you, or cries)
  • Smiles or laughs when you play peek-a-boo

Language/Communication Milestones

  • Makes a lot of different sounds like “mamamama” and “bababababa”
  • Lifts arms up to be picked up

Cognitive Milestones (learning, thinking, problem-solving)

  • Looks for objects when dropped out of sight (like his spoon or toy)
  • Bangs two things together

Movement/Physical Development Milestones

  • Gets to a sitting position by herself
  • Moves things from one hand to her other hand
  • Uses fingers to “rake” food towards himself
  • Sits without support

1 year

Your Baby By One Year

Social/Emotional Milestones

  • Plays games with you, like pat-a-cake

Language/Communication Milestones

  • Waves “bye-bye”
  • Calls a parent “mama” or “dada” or another special name
  • Understands “no” (pauses briefly or stops when you say it)

Cognitive Milestones (learning, thinking, problem-solving)

  • Puts something in a container, like a block in a cup
  • Looks for things he sees you hide, like a toy under a blanket

Movement/Physical Development Milestones

  • Pulls up to stand
  • Walks, holding on to furniture
  • Drinks from a cup without a lid, as you hold it
  • Picks things up between thumb and pointer finger, like small bits of food
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