The Relationship between Typus Melancholicus and Unipolar Depression: A Literature Review.

Background: The Typus Melancholicus (TM) is the premorbid personality of endogenous depression defined by Tellenbach and Kraus and characterized by orderliness, conscientiousness, norm orientation and intolerance of ambiguity. Tellenbach's hypothesis was to find around 50% of TM in the sample of patients with an Unipolar Depression (UD). The present paper aims to make a literature review on the relationship between the Typus Melancholicus (TM) and Unipolar Depression (UD).