Bendii Syndrome
From Star Trek : Freedom's Wiki
A rare illness that sometimes affects Vulcans over the age of 200. The disease is characterized by gradual loss of emotional control; victims exhibit sudden bursts of emotion and irrational anger. Diagnosis is made by culturing tissue from the patient's metathalamus. A dangerous side effect of Bendii Syndrome is that the loss of emotional control can be telepathically projected to others.
