Table 1.

Diagnostic criteria for mild traumatic injury to the head.^a

Mild traumatic injury to the head
Injury to the head fulfilling both of the following:
1. Associated with none of the following:
Loss of consciousness for > 30 min
Glasgow Coma Scale (GCS) score < 13
Post-traumatic amnesia lasting > 24 h1
Altered level of awareness for > 24 h
Imaging evidence of a traumatic head injury such as skull fracture, intracranial haemorrhage and/or brain contusion
2. Associated with one or more of the following symptoms and/or signs
transient confusion, disorientation or impaired consciousness
loss of memory for events immediately before or after the head injury
two or more of the following symptoms suggestive of mild traumatic brain injury:
nausea
vomiting
visual disturbances
dizziness and/or vertigo
gait and/or postural imbalance
impaired memory and/or concentration

^aDiagnostic criteria are from the International Classification of Headache Disorders, 3rd edition (ICHD-3), [8]