Intracranial infection
Meningitis, encephalitis, and abscess are emergencies. Starting antimicrobials and the lumbar-puncture decision, before every result is back, follow hospital protocol and are not prescribed on this page. For the generalist, the task is to recognise the ill person and not send them home labelled as migraine.
These pages are written for health professionals. They do not replace a history, examination, or clinical judgment. Treatment is decided for each patient individually.

