Excessive sweating is also called hyperhidrosis. It is caused by many factors but the most general cause is the genetic cause. Some have linked it with the over activity in the sympathetic nervous system. 1% or 2% of the people of the world population suffers from the excessive sweating. The part of the body in this condition sweats beyond the physiological needs.
It is generally an inherited condition; it affects the people and their social, functional and emotional level. Autonomous system consist of the two parts, the sympathetic and the parasympathetic system which affect the emotions like anger, anxiety and other factors like the heart rate and the blood pressure and many other functions. In cases of palmar hyperhidrosis, the responsible sympathetic ganglia that receive the wrong signal for that abnormal activity are located within the upper part of the chest cavity. In cases of the plantar hyperhidrosis or the foot sweating is due to the sympathetic ganglia that receive the wrong signals are located within a section of lumbar sympathetic chain. Excessive Sweating is further divided into following:
- Generalized Hyperhidrosis: It is sweating over entire body
- Focal Hyperhidrosis: It is the sweating focused at one area.
It occurs in most part of the body. It can happen on the face, trunk and the extremities. Such people may also suffer from other associated condition like obesity, febrile illnesses or some sort of neoplastic diseases or may suffer from some endocrine gland disorder. The causes of excessive sweating may be many but they are sometimes difficult to find. Thus the condition where the cause cannot be identified they are titled as the idiopathic disorder. The generalized hyperhidrosis is seen in the adult age as compared to the focal hyperhidrosis which is the juvenile condition. It is also seen more commonly in the elderly women. This may be due to ageing, hormonal factors and the lack of physical activity.
In this condition there are specific sites where excessive sweating occurs. The most common areas are the hands, armpit and the feet. The most known cause of this condition is the genetic association. It is seen in among 50 to 60% of the cases. The sympathetic chain controls the glands which are apocrine or eccrine in nature. These glands are responsible for the perspiration throughout the body. The eccrine glands are concentrated in the palms and soles of hands and the feet. In some cases the face and the armpits are also affected.
It is also known that excessive sweating is caused by the over activity of the thyroid gland. But this cause was then discarded after years of research. Sometimes sweating occurs due to illnesses such as hyperthyroidism, psychiatric disorder, menopause and obesity.
Excessive sweating causes sweat in the parts affected such as palms of the hands. It is a grave problem for people suffering from this condition. It affects their day to day life. It is not a temporary condition. It may be present from childhood.
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