“…2,[4][5][6][7][8][9] Some of the identified personality characteristics, several measured by the Minnesota Multiphasic Personality Inventory, are: temperament, extraversion, introversion, neuroticism, type A personality (ambitious, rigidly organized), type D personality (negative affectivity), social inhibition, social alienation, social competence, loneliness, interpersonal sensitivity, self-confidence, perfectionism, diffuse anxiety, control of emotions, impulsivity, suspiciousness, obsessivecompulsive trait, coping style, pessimism (dissatisfaction, sadness), and tendency toward denial. 4,5,[10][11][12][13][14][15][16][17] In recent years, evidence has been found that FD is at least correlated with depressive symptoms and general anxiety, 5,18-21 but probably also with high neuroticism and hypochondriasis. 1,4 But correlation does not imply causation.…”