Secondary hemicrania continua: Case reports and a literature review

Sanjay Prakash1, Nilima D Shah, Ritu Kanchan Soni

  • 1Department of Neurology, Medical College, Baroda, Gujarat 390001, India. drprakashs@yahoo.co.in

Insights

Hemicrania continua (HC) can be secondary to other diseases. Early diagnosis is key, with MRI brain recommended for suspected secondary causes of this headache disorder.

Area of Science:

  • Neurology
  • Headache Medicine

Background:

  • Hemicrania continua (HC) is a primary headache disorder responsive to indomethacin.
  • Secondary or symptomatic HC indicates an association with another underlying neurological or non-neurological disease.

Observation:

  • This report details three cases of secondary HC.
  • A literature review identified clinical predictors suggesting an underlying disease entity.

Findings:

  • Key suspected underlying conditions include intracranial structural lesions, head and neck vessel pathology, and lung carcinoma.
  • Predictive factors for secondary HC encompass elderly age, male sex, smoking, constitutional/respiratory symptoms, frequent/nocturnal exacerbations, trauma history, miosis, elevated ESR, and diminished indomethacin response.

Implications:

  • MRI brain is recommended for all patients presenting with HC or HC-like headaches.
  • Further investigations like angiography and CT chest are advised for high-risk patients to detect vascular pathology and lung carcinoma.

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