[Panic disorder and microcirculation. Controlled study of capillaries in anxiety disorders].

However varied the clinical descriptions of anxiety, a sizeable proportion is always allotted to the cardiovascular aspect. One is reminded of Krishaber's cerebral-cardiac neuropathy and Brissaud's conception of anxiety. The implication of the heart in anxiety disorders, especially paroxystic disorder, i.e. panic attacks (PA) is important. Cardiovascular symptoms (tachycardia, increased systolic blood pressure, chest pain) are among the most frequent manifestations of panic; furthermore, recent studies suggest that male panic disorder (PD) patients have an increased mortality risk from cardiovascular diseases. It is with this implication in mind that we undertook this study, the main aim of which was to confirm the existence of an abnormal microcirculation, characteristic of PD, taking the form of an excess number of twisted capillaries. Abnormal capillaries had been described previously in non-controlled studies of patients with psychiatric disorders diagnosed as neurasthenia, neurosis, neurovegetative disorders and more recently as neurocirculatory asthenia, a syndrome similar to PD. This led us to undertake a study of the total number of capillaries observed by photomicrography (capillaroscopy) in the supra-ungueal fold of the fingers of both hands (except thumbs), comparing the number of twisted capillaries of 16 subjects suffering from panic disorder with or without agoraphobia according to the DSM III-R criteria, with those of 16 healthy volunteers matched for age and sex and 14 subjects suffering from other anxiety disorders (10 of them fulfilling criteria for generalized anxiety disorders).(ABSTRACT TRUNCATED AT 250 WORDS)