Why do babies tighten their body?

Babies sometimes stiffen their legs and arms or tighten up their body when you pick them up or they get excited or frustrated. Often this type of stiffening is no big deal. Children might also stiffen up their bottoms when they're having a bowel movement, especially if the stool is hard.
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Why do babies stiffen their bodies?

Sometimes your baby might arch their back because they don't want to be held or fed. This kind of body stiffening could be a sign to put them down or change position. Some babies have strong back muscles and this may be the easiest way — other than crying — for their body to tell you what they want.
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What does it mean when a baby is tight?

What is hypertonia? Hypertonia is too much muscle tone. Infants and newborns diagnosed with hypertonia have stiff muscles, especially their arms, legs and neck, which can be difficult to move. Muscle tone is the amount of resistance (tension) to movement in your muscles.
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Why does my baby grunt and stiffen up?

At first, a newborn's stomach muscles are not strong enough to do this, so they use the diaphragm muscle to move their bowel. As they exercise the diaphragm, it can put pressure on the voice box, resulting in grunting. Other causes of newborn grunting include: Irregular breathing patterns.
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Why does my baby curl his body?

A baby is also born with a startle response called the Moro reflex. An infant who is startled (for example, by a loud noise) or abruptly moved may respond by throwing out his or her arms and legs and curling them in again.
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Low Muscle Tone Baby (Child) vs. High Muscle Tone Baby - How Muscle Tone is Developed in Babies



What does a baby arching back mean?

Understanding Newborn Communication

You may notice your baby's back arched when they seem hungry, frustrated, or are in pain. This natural response usually goes away at around nine months when your baby begins to communicate in new ways. But an arched back might also be a sign of a health condition.
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Why is my baby grunting and arching back?

Babies with silent reflux might fuss, cry, and arch their backs. They do not calm down after feedings. Instead, they make grunting noises while trying to rest.
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Why is my baby tensing up and shaking?

Immature Nervous System

In newborns, the pathways that carry the signals from the brain to the parts of the body aren't yet fully developed, causing jerky and twitchy movements. As the baby's nervous system matures, these movements will become more fluid.
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Why is my baby tensing up and screaming?

Sometimes your baby might even seem to cry for no reason at all. However, sometimes your newborn's normal fussiness turns into extended periods of crying that go on and on and can't be soothed. These nerve-wracking crying spells could indicate that your baby has colic, which affects around 20 percent of all infants.
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Why does my baby clench her fists and shake?

In the first few weeks of your baby's life, you may notice that they seem tense. Their fists are clenched, with arms bent and legs held close to their body. This typically isn't anything to worry about — it's the natural fetal position they've been used to in the womb.
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Why do babies stiffen their arms and legs?

This condition, also called stiff baby syndrome, is when the baby stiffens her body, most notably, her legs and arms, particularly when being picked up. There are many causes for an infant to be stiff and most of them resolve over time. But in a small number of cases, a stiff baby is a sign of a birth injury.
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Why does my baby freeze up?

Infantile spasms can be caused by problems with the way the brain developed in the womb, infections, brain injury, or abnormal blood vessels in the brain (such as an arteriovenous malformations). Infantile spasms also can happen in babies with some types of metabolic and genetic disorders.
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Why does my baby lock her legs?

This is normal to begin with as they don't initially have the knee stability needed, so locking their legs allows them to maintain the position. As your baby's leg muscles get stronger they will be able to control their knees and will no longer do this.
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What is baby shudder syndrome?

Shuddering attacks (SA) are an uncommon benign disorder of infants and young children, with movements resembling shivering and straining, without impaired consciousness or epileptiform EEG, and showing resolution or improvement by 2 or 3 years of age.
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How do I know if my baby has infantile spasms?

Symptoms of Infantile Spasms (IS)
  1. Raise their arms over their head or stick their arms straight out to the side.
  2. Stiffen their legs or "tuck them into the belly," as if having stomach pain.
  3. Suddenly bend at the waist.
  4. Drop or bob their heads briefly.
  5. Roll their eyes back suddenly with subtle head nodding.
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What does infantile spasms look like?

Infantile spasms look like brief tensing or jerking spells that involve your baby's abdomen (belly), head, neck, arms and/or legs. The spasms last for one to two seconds and usually happen one after another (in a series or cluster) every five to 10 seconds.
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Why does my baby keep straining?

It's normal for infants to strain when they're having a bowel movement (pooping). Pooping is more of a challenge for them because they are lying flat, so don't have gravity to help move things along. At first, breastfed babies tend go more often than formula-fed babies because breast milk is more easily digested.
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What are symptoms of colic?

Symptoms
  • Intense crying that may seem more like screaming or an expression of pain.
  • Crying for no apparent reason, unlike crying to express hunger or the need for a diaper change.
  • Extreme fussiness even after crying has diminished.
  • Predictable timing, with episodes often occurring in the evening.
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Why does my baby squirm and grunt while sleeping?

While older children (and new parents) can snooze peacefully for hours, young babies squirm around and actually wake up a lot. That's because around half of their sleep time is spent in REM (rapid eye movement) mode — that light, active sleep during which babies move, dream and maybe wake with a whimper. Don't worry.
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When do newborns start smiling?

Answer. ​​​A baby's first social smile usually appears by the end of their second month. That's one reason why, as a pediatrician, seeing babies and their parents at the 2-month-old checkup is always a great pleasure.
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How can I relieve my baby's gas?

How to Relieve Baby Gas
  1. Burp During and After Feedings. Because gas bubbles tend to form from air that sneaks in during feeding, burping is your friend. ...
  2. Encourage Slow Eating. ...
  3. Use the Right Bottle. ...
  4. Identify Food Sensitivities. ...
  5. Change Formula. ...
  6. Position Your Baby for Gas Relief. ...
  7. Try Baby Gas Drops.
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What does baby seizure look like?

More pronounced signs may include the baby's arms coming up with a slight head nod and their eyes rolling up. While this type of movement may look like the baby is just startled, spasms may occur for five to ten seconds in a cluster for several minutes when the baby first wakes up or is going to sleep.
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What are the symptoms of seizures in babies?

What are the symptoms of a seizure in a child?
  • Staring.
  • Jerking movements of the arms and legs.
  • Stiffening of the body.
  • Loss of consciousness.
  • Breathing problems or stopping breathing.
  • Loss of bowel or bladder control.
  • Falling suddenly for no apparent reason, especially when associated with loss of consciousness.
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Why does my baby go stiff when excited?

Hypertonia is a condition that makes a baby's muscles stiff and hard to move. It happens because of damage to areas of the brain and spinal cord that control muscle movements. While babies need to contract their muscles to move their bodies and sit upright, muscles that are continually contracted are less flexible.
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Do clenched fists always mean baby is hungry?

As explained on La Leche League's Facebook page, “When a baby is hungry, they tend to clench their fists tightly and bring them towards the face. “If he falls asleep hungry, his fists usually stay clenched. But when he gets milk, he relaxes, starting with his face.
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