Posted by Bob Johnson (188.8.131.52) on December 03, 2001 at 14:02:23:
In NEUROLOGY 2001, 56:1233-1236.
Brief report on 220 Italian patients finding a positive family history in 20% of families. "Compared with the general population, first-degree relatives had a 39-fold significantly increased risk of cluster headache. Second-degree relatives had an 8-fold...risk." They conclude this supports the hypothesis that CH has a genetic component in some families.
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