rCBF differs significantly between resting OCD patients and healthy controls, and separate clinical dimensions are associated with functionally distinct rCBF patterns.

Knowledge of the aetiology, epidemiology and treatment of nightmares has improved with more accurate definition of the problem. This review summarizes what is known about nightmares and their relationship with other medical and psychiatric disorders. Treatment methods are discussed, with particular reference to behavioural methods, which have become increasingly popular in recent years. Further research is suggested in order to determine the most efficient method of treating distressing nightmares.

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