This online module focuses on the recognition and management of adult time-critical medical emergencies, including adrenal insufficiency, aortic dissection, stroke, seizures, heat-related illness, and toxicological presentations. Designed for healthcare professionals in acute and prehospital settings, the course integrates underlying pathophysiology with evidence-based content and case-based learning to strengthen clinical assessment, differential diagnosis, and the early recognition and management of critically ill adult patients.