Synonyms : Chronic Paroxysmal Hemicrania, Episodic Paroxysmal Hemicrania, Chronic Paroxysmal Hemicranias, Episodic Paroxysmal Hemicranias, Hemicrania, Chronic Paroxysmal, Hemicrania, Episodic Paroxysmal, Hemicrania, Paroxysmal, Hemicranias, Chronic Paroxysmal