Controversies in Hypertension VI: Paroxysmal Hypertension

Area of Science:

• Cardiology
• Endocrinology
• Neurology

Background:

• Paroxysmal hypertension presents as sudden, significant blood pressure increases, potentially with hyperadrenergic symptoms.
• Pheochromocytoma is a rare cause, with less than 1% of patients having this tumor.
• Differential diagnosis includes labile hypertension, panic attacks, pseudopheochromocytoma, and baroreflex failure.

Purpose of the Study:

• To differentiate paroxysmal hypertension from its mimics.
• To provide diagnostic and therapeutic recommendations for paroxysmal hypertension.

Main Methods:

• Review of clinical presentations of four syndromes mimicking pheochromocytoma.
• Discussion of diagnostic criteria and therapeutic strategies.

Main Results:

• Labile hypertension: triggered by stress/anxiety, may be asymptomatic.
• Panic attacks: precipitated by fear/anxiety.
• Pseudopheochromocytoma: paroxysms without clear triggers, often linked to emotional repression.
• Baroreflex failure: symptomatic hypertensive paroxysms alternating with hypotension, often stress-induced.

Conclusions:

• Accurate diagnosis of paroxysmal hypertension requires differentiating it from similar conditions.
• Evidence-based guidelines and randomized controlled trials for paroxysmal hypertension therapy are lacking.
• Recommendations for diagnosis and management of these mimics are discussed.