Palmoplantar hyperhidrosis:


·           has a component of hereditary texture, since hyperhidrotics have statistically more close relatives with hyperhidrosis than the people of normal sweating do

·           is not related to hematological problems, since the general blood tests did not reveal significant differences between hyperhidrotics and people of normal sweating

·           is not caused by thyroid dysfunction, since the levels of hyperhidrotics’ thyroid hormones were normal

·           is not the result of diabetes or hypoglycemia, since the values of glucose levels in blood were normal for hyperhidrotics

·           is not related to disorders of the electrolytes concentration in blood, since the relevant values were normal for hyperhidrotics

·           is not the result of some neurological problem, since the typical neurological examination did not reveal any problem and none hyperhidrotic person mentioned such a problem

·           is not caused by lack of balance between the two parts of the ANS, since the analysis of the heart rate variability did not reveal statistically significant differences between hyperhidrotics and individuals of normal sweating

·           cannot be considered to be due to over functioning of the sympathetic fibers that pass through the È2,3 sympathetic ganglia; because of the above finding and, also, because this suggestion does not interpret palmar hyperhidrosis which often accompanies plantar hyperhidrosis and from the fact that hyperhidrotics’ arm does not present hyperhidrosis, its sweating, on the contrary, was not correlated to that of the palm

·           is not a result of great sweat glands density, since hyperhidrotics presented smaller sweat glands density on the palms than the normal individuals did (the difference was statistically insignificant)

·           is related to differences in personality traits; hyperhidrotics presented higher neuroticism scores in the Eysenck questionnaire and in the depression, psychopathic condition and social introversion scale of the Minnesota Multifasic Personality Inventory, without coming near in any scale to the limits of the psychiatrically ill people

·           cannot be considered as a result of continuous startling events, since there are individuals among hyperhidrotics who do not respond at all to some startling sound stimulation 9hyperhidrotics respond statistically higher to a significant degree than normal individuals to startling stimulation)

·           is not a result of positive strengthening feedback, since it appears even when the hyperhidrotic individual has no information concerning the degree of their palmar sweating

·           appears more intensely, in an analogous way that sweating appears in normal individuals, when there is an advantage from the wetting of the palms (leafing through) in comparison with cases, when this wetting is detrimental (fingerprints)

·           when it is useful (leafing through with the fingers), it does not get habituated, so that to stop after some repetitions (as it happens after identical knocks, for instance)

·           cannot be considered to be caused by muscular effort, since hyperhidrosis does not appear in the absence of discomfort (hyperhidrotics respond statistically highly to a significant degree than normal individuals, when they are situated in conditions of muscular tension)

·           appears in conditions of psychomental tension of hyperhidrotics; still, of a condition of great relaxation is achieved (mental arithmetic without talking and in relaxed position) hyperhidrosis is not exhibited

·           appears in every case of a combination of psychomental and muscular tension; this combination seems to be the efficient and necessary condition for its appearance.


            Examinations, checking, experiments. We took answers to questions that had been posed, indeed. It seems that somewhere about here it is necessary for us to think of the “what there is behind” mechanism. Now we can go further and see what is going on with that part of our self that takes the decisions for the arrangement of the functions, that we cannot determine with our will....


(From the book: Stelios Kerassidis, "Why my palms sweat?" A psychophysiological study. Findings and theory.)



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