Hemicrania continua for the headache. When the symptoms of hemicrania continua are present, it's considered "diagnostic" if they respond completely to indomethacin. The efficacy of indomethacin may not be long term for all patients, as can eventually become ineffective. The factor that allows hemicrania continua and its exacerbations to be differentiated from migraine and cluster headache is that hemicrania continua is completely responsive to indomethacin. Triptans and other abortive medications do not affect hemicrania continua. In addition to persistent daily headache of HC, which is usually mild to moderate (and frequently severe), HC can present other symptoms. These additional symptoms of HC
Chronic paroxysmal hemicrania disease with symptoms lasting for longer than a year, either without remission or with remissions that last less than a month. In order to be diagnosed with CPH, a patient needs to have had at least 20 attacks filling the following criteria: In addition, diagnosis of CPH requires that neuropathy of the supraorbital area in the temporal branch of the facial nerve be ruled out. Though outwardly similar to cluster headaches, chronic paroxysmal hemicrania is rather different, and the two headaches are not a subset of one or the other. Key differences include: A ten-patient study conducted by Pareja et