Current pain and headache reports
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Cluster headache is one of the most excruciating headaches affecting human beings--especially the male sex. Most of the cluster headache cases are of episodic nature, with active cluster periods lasting generally between a few weeks and 2 or 3 months. A still undetermined percentage of patients report nonpainful sensations preceding the onset of the pain attack for a variable period of time. ⋯ When occurring for several days, weeks, or months before the pain, they are termed premonitory symptoms. The author believes that premonitory symptoms have not been properly diagnosed and emphasizes the need to investigate their presence, because by knowing them advances can be made in the understanding of the physiopathology of this particular cephalalgia. Furthermore, it can also allow the physician to be ahead, by giving preventive treatment and stopping or diminishing the intensity and duration of the pain attacks.
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Cluster headache is an uncommon yet well-defined neurovascular syndrome occurring in both episodic and chronic varieties. The most striking feature of cluster headache is the unmistakable circadian and circannual periodicity. Inheritance may play a role in some families. ⋯ Transitional prophylaxis involves the short-term use of either corticosteroids or ergotamine derivatives. The cornerstone of maintenance prophylaxis is verapamil, yet methysergide, lithium, and divalproex sodium may also be employed. In some patients, melatonin or topiramate may be useful adjunctive therapies.
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Chronic pains typically evaluated by a urologist are discussed from the perspective of a non-urologist pain clinician. The pathophysiology of some pains is understood and so we believe the patient's symptoms: examples are cancer-related pain and recurrent urolithiasis. ⋯ Other pains, such as those of interstitial cystitis, chronic prostatodynia, and chronic orchialgia are less understood and so are treated in a more conservative and often empiric fashion. Proposed therapies for these disorders are discussed.
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Curr Pain Headache Rep · Feb 2001
ReviewHypothalamic involvement and activation in cluster headache.
Cluster headache is an episodic form of primary neurovascular headache that is both severe and relatively rare. It is characterized by episodes of headache with cranial parasympathetic activation and sympathetic impairment that come in bouts, or clusters. Its pathophysiology can be divided into understanding the attack phenotype and the biotype of the periodicity. ⋯ This area is subtly enlarged in its gray matter volume, active during an acute cluster headache but inactive when patients are challenged between bouts. Cluster headache is likely to be a form of primary neurovascular pain whose phenotypic expression relies on the trigeminal-autonomic reflex, with a biotype determined by the brain area, the posterior hypothalamus, in which the lesion seems to be located. Understanding both the phenotypic expression and the biotype will, respectively, enable better acute attack treatments and better preventative management of this horrible form of headache.