Bob Johnson
CH.com Alumnus
 
Offline

"Only the educated are free." -Epictetus
Posts: 5965
Kennett Square, PA (USA)
Gender:
|
See 2nd abstract:
Curr Pain Headache Rep. 2002 Feb;6(1):65-70.
What predicts evolution from episodic to chronic cluster headache?
Torelli P, Manzoni GC.
Headache Centre, Institute of Neurology, Strada del Quartiere, 4, Parma 43100, Italy. paolatorelli@libero.it
Over the last few years, attention has increasingly been focused on the evolution of cluster headache over time. Predictive factors have been identified that are correlated with an increased risk of unfavorable evolution from the episodic form to the chronic form of cluster headache. Late onset, the presence of sporadic attacks, a high frequency of cluster periods, and short-lived duration of remission periods when the headache is still in its episodic form all correlate with a possible worsening of the clinical picture over time. The reasons for evolution of episodic cluster headache to chronic are still unknown, but some factors, such as head trauma and other lifestyle factors--eg, cigarette smoking and alcohol intake--have been suggested as having a negative influence on the course of cluster headache over time.
PMID: 11749880 -------------------------------------------------------------------------------- ------------------------ J Headache Pain. 2005 Feb;6(1):3-9. Epub 2005 Jan 25.
Chronic cluster headache: a review.
Favier I, Haan J, Ferrari MD.
Department of Neurology, K5-Q Leiden University Medical Centre, 9600, 2300 RC Leiden, The Netherlands.
Cluster headache (CH) is a rare but severe headache disorder characterised by repeated unilateral head pain attacks accompanied by ipsilateral autonomic features. In episodic CH, there are periods of headache attacks with pain-free intervals of weeks, months or years in between. A minority of patients have the chronic form, without pain-free intervals between the headache attacks. Chronic CH can occur as primary or secondary chronic CH; the rarest form is episodic CH arising from chronic CH. In this article, we give a review of the chronic forms of CH and focus on demographics, clinical manifestations, social habits, predictive factors, head injury, genetics, neuroimaging and therapy. IT IS REMARKABLE THAT LITTLE IS KNOWN ABOUT RISK FACTORS THAT MAKE CH CHRONIC.
PMID: 16362185
|