Slate hat einen superinteressanten Artikel über die neuronalen Gründe für Nymphomanie. Was Sie schon immer über Sex wissen wollten, aber nie zu fragen wagten, quasi.
Although Klüver-Bucy Syndrome is relatively rare, it's one of the most notorious neurological causes of a complete breakdown in one's ability to control sexual urges. In 1939, neuroanatomists Heinrich Klüver and Paul Bucy removed the greater portions of both temporal lobes and the rhinencephalon from the brains of rhesus monkeys. Among a host of other peculiar effects of this rather cruel vivisection, the monkeys became incredibly randy, displaying a prominent and indiscriminate desire to copulate.
The first documented case of full-blown Klüver-Bucy in humans arrived in 1955, when an epilepsy patient underwent a bilateral temporal lobectomy (a surgical excision of the lobes) and subsequently developed a ravenous sexual appetite, among other things. More often, the syndrome appears in lesser degrees, precipitated by a nasty insult to the medial temporal lobe. That might result from a case of herpes encephalitis or Pick's disease, or from trauma and oxygen deprivation. Not all such patients experience hypersexuality, mind you, but some do. Other symptoms aren't terribly appealing, either, however; they include hyperorality (a compulsive desire to put things in one's mouth), apathy, emotional unresponsiveness, and various sensory disorders.
Naughty by Nature – What should we think of people whose addled brains are driving them to nymphomania? (Bild: William-Adolphe Bouguereau - Nymphs and Satyr (1873) via Wikipedia)
Related: Cumshot (SFW)