Management of Head Injury in a 1-Year-Old Child
A 1-year-old with head injury from a fall should be evaluated using validated clinical decision criteria (PECARN) to determine imaging needs, with CT scan reserved for high-risk features and observation or selective imaging for intermediate-risk presentations. 1
Initial Risk Stratification
The evaluation must categorize the child into risk groups based on specific clinical criteria, as children under 2 years have the highest incidence of skull fractures and intracranial injury (29% in those <12 months vs 4% in 13-24 months). 2
High-Risk Features (CT Scan Indicated)
Perform immediate CT head without contrast if ANY of the following are present: 1
- Glasgow Coma Scale <15 at any point
- Altered mental status (agitation, somnolence, slow response, repetitive questioning)
- Signs of skull fracture (palpable depression, hemotympanum, Battle sign, raccoon eyes)
- Neurological deficit (focal findings on examination)
- Post-traumatic seizure
- Suspected non-accidental injury 3
Intermediate-Risk Features (Observation vs Selective Imaging)
For children with ANY of the following, consider observation in hospital or CT/skull radiographs based on clinical judgment: 1
- Large, boggy, or non-frontal scalp hematoma (particularly concerning in infants <12 months)
- Loss of consciousness >5 seconds
- Severe mechanism of injury (motor vehicle crash with patient ejection, death of another passenger, or rollover; pedestrian/bicyclist without helmet struck by motorized vehicle; fall >3 feet)
- Not acting normally per parent 1
Critical caveat: 62% of children with isolated skull fractures and 58% with intracranial injury had NO history of loss of consciousness, vomiting, seizure, or behavioral change. 2 Additionally, 92% of children with isolated skull fractures and 75% with intracranial injury had normal consciousness levels and non-focal neurologic examinations at diagnosis. 2
Very Low-Risk (No Imaging Required)
Children can safely forgo imaging if ALL of the following are met: 1
- Normal mental status
- No loss of consciousness
- No vomiting
- No severe mechanism of injury
- No signs of skull fracture
- No scalp hematoma (or only small frontal hematoma)
- Acting normally per parent
This approach has 100% negative predictive value and 100% sensitivity for clinically important traumatic brain injury in children <2 years. 1
Critical Pitfalls to Avoid
Do not rely on skull radiographs alone to rule out intracranial injury—skull fractures were present in only 70% of children with intracranial complications, meaning 30% had intracranial injury without skull fracture. 2 Conversely, not all skull fractures indicate intracranial injury. 1
Do not assume minor falls are safe—7% of complications from skull fractures/intracranial injury resulted from falls ≤3 feet. 2 Low-height falls can cause primary intracranial injury without soft tissue or skull injury in 6% of infants and 16% of toddlers. 4
Do not miss occult injuries—11% of children with skull fractures had no evidence of scalp or facial soft tissue swelling, and 8% of patients with primary intracranial injury had neither skull fracture nor cranial soft tissue injury. 4
Management Based on Imaging Results
If CT Shows Intracranial Injury
- Admit for 24-hour observation minimum 5
- Neurosurgical consultation for epidural hematoma, subdural hematoma, or any mass effect
- Serial neurological assessments
- Repeat imaging if clinical deterioration occurs
If CT is Normal or Not Performed (Low-Risk)
- Provide detailed discharge instructions to parents/caregivers on warning signs 6
- Educate about expected symptoms and when to return
- Arrange follow-up within 24-48 hours if any concerning features were present
- Counsel on injury prevention strategies
Post-Acute Management
Monitor for post-concussive symptoms that may persist beyond 2 weeks, including physical, cognitive, and psychological effects that can impact the child's functioning. 6 Provide family education on gradual return to normal activities and when to seek further evaluation if symptoms worsen or fail to improve. 6
The CDC recommends standardized assessment tools for diagnosis, risk factor assessment for prognosis, and structured support for symptom management in pediatric mild traumatic brain injury. 6