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SUNCT syndrome: duration, frequency, and temporal distribution of attacks
J A Pareja1, J M Shen, P Kruszewski
1Department of Neurology, Trondheim (Norway) University Hospitals.
Headache
|March 1, 1996
Summary
Short-lasting unilateral neuralgiform headache attacks (SUNCT) typically occur during the day, with a mean duration of 61 seconds. Understanding attack patterns aids in differentiating SUNCT from other headache disorders.
Area of Science:
- Neurology
- Headache Medicine
Background:
- SUNCT syndrome is characterized by severe unilateral headaches.
- Objective data on attack characteristics are crucial for diagnosis.
Purpose of the Study:
- To objectively estimate the duration, frequency, and temporal distribution of SUNCT attacks.
- To aid in the differential diagnosis of SUNCT syndrome.
Main Methods:
- Objective measurement of 348 SUNCT attacks using videotapes, polygraphy, and stopwatches.
- Assessment of attack timing and frequency in 4 patients using time charts for 585 attacks.
Main Results:
- Mean attack duration was 61 seconds (range 5-250 seconds).
- Mean attack frequency was 28 per day (range 6-77).
- Attacks showed a daytime bimodal distribution (morning, afternoon/evening) with minimal nocturnal occurrence (1.2%).
Conclusions:
- Attack duration and temporal patterns in SUNCT are key diagnostic features.
- These characteristics help differentiate SUNCT from conditions like trigeminal neuralgia.