Occurs within the first 24 hours [maybe 48] of head trauma. Suspect if progressive headache develops. If there’d been loss of consciousness with the trauma, patient recuperates and experiences a “lucid interval” or normality before decompensation.
Natural History: 100% fatal [within hours of symptom onset], but excellent prognosis if operated in time.
See posting Acute Headache – 3.
DiagnosisDude 