Shaken baby syndrome

Causes Babies have weak neck muscles and often struggle to support their heavy heads. If a baby is forcefully shaken, his or her fragile brain moves back and forth inside the skull. This causes bruising, swelling and bleeding. Shaken baby syndrome usually occurs when a parent or caregiver severely shakes a baby or toddler due to frustration or anger — often because the child won't stop crying. Shaken baby syndrome isn't usually caused by bouncing a child on your knee, minor falls or even rough play. Risk factors The following things may make parents or caregivers more likely to forcefully shake a baby and cause shaken baby syndrome: Unrealistic expectations of babies Young or single parenthood Stress Domestic violence Alcohol or substance abuse Unstable family situations Depression A history of mistreatment as a child

Symptoms

Shaken baby syndrome symptoms and signs include:
  • Extreme fussiness or irritability
  • Difficulty staying awake
  • Breathing problems
  • Poor eating
  • Vomiting
  • Pale or bluish skin
  • Seizures
  • Paralysis
  • Coma
You may not see any signs of physical injury to the child's outer body. Sometimes, the face is bruised. Injuries that might not be immediately seen include bleeding in the brain and eyes, spinal cord damage, and fractures of the ribs, skull, legs and other bones. Many children with shaken baby syndrome show signs and symptoms of prior child abuse.
In mild cases of shaken baby syndrome, a child may appear normal after being shaken, but over time he or she may develop health or behavioral problems.

Causes

Babies have weak neck muscles and often struggle to support their heavy heads. If a baby is forcefully shaken, his or her fragile brain moves back and forth inside the skull. This causes bruising, swelling and bleeding.
Shaken baby syndrome usually occurs when a parent or caregiver severely shakes a baby or toddler due to frustration or anger — often because the child won't stop crying.
Shaken baby syndrome isn't usually caused by bouncing a child on your knee, minor falls or even rough play.

Risk factors

The following things may make parents or caregivers more likely to forcefully shake a baby and cause shaken baby syndrome:
  • Unrealistic expectations of babies
  • Young or single parenthood
  • Stress
  • Domestic violence
  • Alcohol or substance abuse
  • Unstable family situations
  • Depression
  • A history of mistreatment as a child

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