Sexual disinhibition is a disturbing behavioral symptom in dementia. At present, there are no treatment guidelines available. Here we present the successful use of carbamazepine in a 78-year old AD patient with hypersexual behavior. The efficacy of carbamazepine in this case is in parallels to its effects on aggression and agitation in dementia and supports the important role of anticonvulsants in the management of behavioral disturbances in demented patients.