Personality characteristics and renin in essential hypertension

There may be specific personality differences between some if not all biochemically defined subgroups of patients with essential hypertension. A newly standardized projective test of reactions to frustration, a questionnaire related to such characteristics as aggressiveness and dominance, and a standardized interview were applied to 16 patients with established high renin essential hypertension and 21 patients of similar age with normal renin. High renin patients are significantly less assertive, fail to externalize their aggression, perceive frustration less and try to please others more; they have a stronger need to solve problems immediately yet tend to deny social conflicts. These tendencies are likely to create internal conflict and indicate a psychosomatic component in high renin essential hypertension.