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Hemicrania continua, a rare but severe headache condition, literally means “continuous one-sided headache” in Latin. This chronic condition manifests as an intense, unrelenting pain concentrated on one side of the head, typically around the eye area. It is more common in women.
The condition often presents with distinctive features beyond the constant one-sided pain. Patients frequently experience:
- Redness and tearing of the affected eye
- Nasal congestion and runny nose
- Forehead and facial sweating
- Eyelid swelling
- Pupil size changes
- Restlessness or agitation
The diagnosis of hemicrania continua can be particularly challenging, especially when the only symptom is a one-sided headache. Doctors often misdiagnose it as migraine or tension headache because of its rarity and overlap with other headache types.
What makes hemicrania continua unique is its remarkable response to indomethacin, a powerful non-steroidal anti-inflammatory drug (NSAID). The response to this medication is so dramatic that hemicrania continua is one of two headache types that are called indomethacin-sensitive headaches.
While indomethacin is highly effective, some patients may experience stomach-related side effects. For those who cannot tolerate indomethacin, several alternatives exist:
- Other NSAIDs (though generally less effective)
- Boswellia, an herbal supplement with anti-inflammatory properties
- Botox injections
Chronic paroxysmal hemicrania shares features with hemicrania continua but differs in its pattern. It causes more intense pain attacks lasting minutes but occurring many times throughout the day. Like hemicrania continua, it also responds extremely well to indomethacin.
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