Remarks on the Ætiology and Symptoms of Young-Dah-Hte with a Report on Four Cases and Its Medico-Legal Significance

as young-dali-hte, the literal translation of which is ' to be ticklish and nervous The condition is characterized by paroxysms of apparently purposive actions which occur independently of the will as a result of a given stimulus. I have noticed two distinct types of sufferers :? Type I.?Individuals who react to sudden stimuli by imitating words, gestures and actions of those in the immediate neighbourhood. They may or may not utter an obscene epithet at the same time. Type II.?Those in whom a sudden tactile or auditory stimulus produces a severe response. They jump and recoil as though they had received a great fright, uttering at the same time