Summary

Stroke is a sudden loss of brain function from disrupted brain_blood_flow. Two main types: ischemic_stroke from a blood_clot, and hemorrhagic_stroke from a vessel_bleed. Symptoms are usually sudden_onset: face droop, arm weakness, speech trouble; remember FAST or BEFAST. A brief episode is TIA, a transient_ischemic_attack. Major risk_factors include hypertension, atrial_fibrillation, diabetes, smoking, high_cholesterol, and older_age. Stroke is a medical_emergency; rapid action matters, summed up as time_is_brain.