Unregulated hypertension has the potential to escalate into a hypertensive crisis, which is characterized by a systolic blood pressure of 180 mm Hg or higher, or a diastolic blood pressure of 120 mm Hg or higher. Hypertensive crisis can be categorized into two types: hypertensive urgency or hypertensive emergency. The classification is based on the extent of damage to organs such as the heart, kidneys, and nervous system. Promptly recognizing a hypertensive emergency by appropriate diagnostic testing and triage will result in effectively lowering blood pressure, hence reducing the occurrence of fatal outcomes. Patients who have severe hypertension and acute damage to their organs (known as hypertensive emergencies) should be admitted to an intensive care unit. They require immediate decrease of blood pressure with a short-acting intravenous antihypertensive medicine that can be adjusted according to their needs. Physicians, nurses, and pharmacists should conduct comprehensive assessments in patients who have a hypertensive crisis in order to successfully reverse, intervene, and rectify the underlying cause, as well as enhance long-term results following the episode.