What symptom may indicate hypertensive crisis?

A severe headache is a classic symptom that may indicate a hypertensive crisis. This type of headache is often described as intense and may feel different from a typical headache, often referred to as a "thunderclap" headache. It is important to recognize this symptom because a hypertensive crisis, defined as a sudden and severe increase in blood pressure, can lead to serious complications such as stroke, heart attack, or organ damage.

While the other options might be associated with various health conditions or stress, they are not specific indicators of hypertensive crisis. Low energy can occur due to numerous factors, such as fatigue or underlying health issues. Frequent urination is more commonly linked to conditions affecting the kidneys or urinary tract rather than directly indicating high blood pressure. Loss of appetite may occur for various reasons, including stress, illness, or medication side effects, but is not a hallmark symptom of a hypertensive crisis. Recognizing the warning signs, such as a severe headache, is vital for timely intervention and treatment.