What Is Shaken Baby Syndrome and How Can It Be Prevented?

Shaken baby syndrome (SBS) is a serious form of abusive head trauma (AHT) caused by violently shaking an infant, and it is preventable. The National Center on Shaken Baby Syndrome (NCSBS) frames prevention around a single, normal trigger—infant crying—and gives caregivers a concrete coping plan: soothe safely, and if you feel overwhelmed, put the baby down in a safe place and walk away. This article explains what SBS/AHT is, why crying is the usual trigger, what to do when a baby won't stop crying, which signs need emergency care, and where families and professionals can find support.

What SBS and AHT mean, and why the terms differ

Shaken baby syndrome describes the injuries that result when an infant is shaken forcefully. Because shaking is one mechanism within a broader category of inflicted head injuries, the clinical and prevention field increasingly uses the umbrella term abusive head trauma (AHT). The NCSBS pairs the two as "SBS/AHT" throughout its materials, reflecting that the same prevention message covers both.

The distinction matters mainly for how the topic is discussed:

For caregivers, the practical content is the same: the risk comes from a momentary loss of control in response to a normal infant behaviour, not from ordinary handling, play, or soothing.

Why crying is the trigger—and why it isn't the caregiver's fault

Infant crying, particularly early infant crying, is the situation most often preceding SBS/AHT. The NCSBS's Period of PURPLE Crying program is built on the premise that crying in the first months is normal, can be prolonged, and is not caused by bad parenting or a caregiver's failure.

The PURPLE framework is designed to help caregivers recognise that early crying:

• is normal and expected in young infants,
• can be unsoothable at times no matter what you try,
• peaks and then gradually decreases,
• is not a sign that the baby is angry at you or that you are doing something wrong.

Understanding this changes the emotional math. A caregiver who expects crying to stop on command may feel frustrated or helpless when it doesn't; a caregiver who knows crying is a developmental phase is better positioned to stay calm and use a safe coping plan.

What to do when a baby won't stop crying

The core prevention skill is having a plan before frustration peaks. The NCSBS approach emphasises safe soothing followed by a safe break.

Safe soothing steps

1. Check the basics first—feeding, diaper, temperature, and whether the baby seems unwell. Rule out simple needs.
2. Try calming methods such as gentle motion, holding, swaddling, or quiet surroundings. The Period of PURPLE Crying app includes a library of articles and videos on infant crying, sleeping, and soothing, plus a tracker for crying, feeding, sleeping, and growth.
3. Accept that some crying won't stop. If soothing isn't working, that is consistent with normal early crying—not evidence that you need to try harder or faster.

The safe break

If you feel yourself losing patience:

• Put the baby down in a safe sleep space—on their back, in a crib or bassinet—even if they are still crying.
• Step away for a few minutes to calm down.
• Return when you feel steady, and repeat the soothing or the break as needed.

Never shake a baby, and never handle a baby roughly out of frustration. Crying alone does not harm a baby; shaking can cause severe injury or death.

Warning signs that need emergency medical help

A baby who has been shaken may not show obvious external marks. Seek emergency medical care immediately if an infant has any of the following after a possible shaking incident or an unexplained change in condition:

• Extreme irritability or inconsolable crying
• Difficulty staying awake, extreme sleepiness, or unresponsiveness
• Breathing problems
• Vomiting
• Seizures
• Pale or bluish skin
• A change in feeding or alertness that seems sudden and unexplained

If you suspect a baby has been shaken, do not wait to see whether symptoms improve. Get emergency help and be honest with medical staff about what happened—accurate information affects treatment.

Prevention resources for families, caregivers, and professionals

The NCSBS is a non-profit organisation whose mission is to prevent SBS/AHT and promote infant well-being through programs, policy, research, and education for families, caregivers, and professionals. Its stated vision is to prevent shaken baby syndrome and improve overall infant care, and its stated belief is that all babies can be safe from harm.

Resources described on the site include:

• Period of PURPLE Crying—the flagship prevention education program, with a companion app offering articles, videos, and tracking tools for crying, feeding, sleeping, and growth.
• Family resources—materials aimed at parents and caregivers.
• Training—education for professionals; the site lists audiences including hospitals, public health, pediatricians, social workers, and home visitors.
• Research—a page dedicated to the latest research on SBS/AHT.
• Conferences—including the 2026 International Conference on SBS/AHT in Nashville, scheduled for September 22–24, 2026, with a full program available. The site notes the conference has been approved for social work continuing education, and separate pages describe approval for nursing and legal continuing education.
• Volunteer and support options—a volunteer interest form and donation options.

For a parent or caregiver, the most immediately useful entry points are the PURPLE Crying materials and the app. For a professional—nurse, social worker, pediatrician, home visitor, or public health staffer—the training and conference offerings are the relevant starting points.

The bottom line

SBS/AHT is a preventable injury, and prevention rests on two things: knowing that early infant crying is normal and not the caregiver's fault, and having a rehearsed plan to soothe safely and take a safe break when frustration builds. If you ever feel close to losing control, put the baby down safely and step away—that single action is the difference the prevention message is built around.