erethism

English

From French éréthisme, from Ancient Greek ἐρεθισμός (erethismós), from ἐρεθίζειν (erethízein, “to irritate”).

erethism (countable and uncountable, plural erethisms)

(pathology) Abnormal excitement of a bodily organ or tissue.
Any unusual or morbid overexcitement.
- 1978, Robert Hurley, translated by Michel Foucault, The History of Sexuality Volume I, Penguin, page 32:
  Since the eighteenth century, sex has not ceased to provoke a kind of generalized discursive erethism.
A neurological disorder arising from mercury poisoning, leading to irritability, depression, etc.
Synonyms: erethism mercurialis, mad hatter disease, mad hatter syndrome

pathology: abnormal excitement of organ or tissue

overexcitement