hemicrania continua - Health Topics
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Understanding the Context
Literature review current through: Dec 2025. This topic last updated: . Hemicrania continua (HC) is a primary (idiopathic) headache disorder characterized by a unilateral headache that is continuous in nature. Hemicrania continua is considered a primary headache disorder, meaning that another condition does not cause it.
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In hemicrania continua, basal pain is a dull aching pressure similar to that of TTHs (Tension-Type Headaches) that occurs nearly always on the same side of the head and face. Hemicrania continua is a headache disorder that causes constant pain on one side of your head and face. The level of pain may go up and down, but it almost never goes away. Learn about the symptoms and treatment of hemicrania continua, an uncommon primary headache disorder found on one side of the head. Hemicrania continua (HC) is an indomethacin-responsive primary headache disorder which is currently classified under the heading of trigeminal autonomic cephalalgias (TACs).
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Hemicrania continua is a headache disorder that causes pain in one side of your face or head. These headaches last for extended periods, often for several months. What is hemicrania continua? Hemicrania continua describes a continuous, fluctuating, pain present on one side of the head. Hemicrania Continua (HC) is a rare and often misunderstood headache disorder characterized by persistent, unilateral (one-sided) pain that can significantly impact a person's quality of life. Unlike other headache types, HC is unique in its continuous nature and responsiveness to specific treatments.
A headache is considered hemicrania continua if the person has had a one-sided daily or continuous headache of moderate intensity with occasional short, piercing head pain for more than 3 months without shifting sides or pain-free periods.