The four types of hypertension are based on the type of fluctuations in a patient’s 24-hour blood pressure, which can be categorized as spoon-type blood pressure, non-spoon-type blood pressure, anti-spoon type blood pressure, and deep-spoon or super-spoon type blood pressure. Spoon blood pressure is characterized by increased blood pressure during the day and low blood pressure at night, which is called spoon blood pressure because blood pressure fluctuates like a spoon during the day and night. Non-spoon blood pressure means that the patient’s blood pressure doesn’t drop significantly during the night, and anti-spoon blood pressure means that the patient’s blood pressure at night is higher than that during the day, which is why it’s called anti-spoon blood pressure. Deep spoon or super-spoon blood pressure means that the nighttime blood pressure drops more than 20% compared to the daytime blood pressure. The four categories of hypertension are based on ambulatory blood pressure monitoring.