erethisms

Noun

erethism (countable and uncountable, plural erethisms)

1. Abnormal excitement of a bodily organ or tissue.
2. Any unusual or morbid overexcitement.
   • Since the eighteenth century, sex has not ceased to provoke a kind of generalized discursive erethism.1978, Robert Hurley, translated by Michel Foucault, The History of Sexuality Volume I, Penguin, page 32
3. A neurological disorder arising from mercury poisoning, leading to irritability, depression, etc.

   Synonyms:

   erethism mercurialis, mad hatter disease, mad hatter syndrome