Stroke
Stroke is an acute neurological event caused by interrupted cerebral blood flow or bleeding. Rapid recognition and timely emergency evaluation are central because different mechanisms require different management.
Open interactive lesson & self-check ↗Stroke — learning map
Original conceptual SVG · scalableOriginal schematic relationship map for this topic; relationships are organized for study, not intended as an anatomical depiction or a diagnostic algorithm.
Ischemia
An ischemic stroke occurs when impaired arterial supply deprives brain tissue of oxygen and glucose.
Hemorrhage
An intracerebral or subarachnoid hemorrhage produces injury through bleeding and secondary effects; distinguishing it from ischemia usually requires urgent imaging.
Localization
Sudden face, arm or speech changes, vision loss, severe imbalance and other deficits may reflect the affected brain territory; atypical presentations also occur.
Time and safety
Onset or last-known-well time, neurological examination, glucose and urgent imaging inform specialist decisions; a suspected stroke is a medical emergency.
Reference and next reading
Explore the original curriculum and publisher-hosted resources for full-depth reading; this note is an original schematic introduction, not an exhaustive chapter.