Sweat is produced by sweat glands which are situated deep inside the skin. There are millions of sweat glands distributed all over the skin, except on the nail bed, margins of lips and the glans. The main function of sweat is to keep the body cool. In case of lack of sweating or complete absence of sweat, the body may become overheated.
There are many people who sweat less as compared to others all the time. It may be natural for them. But if you do not sweat in hot temperature or while performing rigorous physical exercise, there may be some underlying cause that needs to be investigated. You should consult your doctor to ascertain the reason behind it.
When the core temperature of the body rises, sweat glands become active and release fluid and salts on the skin surface. Sweat evaporates on skin surface and helps to keep the body cool. 98.8% of sweat is composed of water and the rest is made up of salts such as Sodium chloride, sodium phosphate, bicarbonate and small amount of urea.
The activity of sweat glands increases after the person attains puberty. Though sweat glands are more in women, they are more active in men. It is common for a person to sweat a lot in summer, after doing strenuous physical work, if he is emotionally stressed, or after eating spicy and hot food. He also perspires profusely during fever. If there is lack of sweating or complete absence of perspiration there may be some reason. Let us know the cause behind lack of sweating.
What Causes Lack Of Sweating During Exercise?
Dehydration: it is a common cause for lack of sweating. You may sweat less if there is diarrhea, vomiting. You may also sweat less if you do not drink enough amount of water.
Burns: in case of burns, the sweat glands together with the skin is damaged and destroyed. As a result, the person perspires very less or there may be complete stoppage of perspiration.
Exercise: if you exercise for a prolonged period without drinking water or if you exercise in hot climate there may be less production of sweat. However, if you maintain good hydration during exercise and still if you do not perspire, there may be some underlying medical problem. In such cases, you should consult your doctor.
Medical reasons: skin diseases such as atopic dermatitis, leprosy, radio-dermatitis and scleroderma can cause lack of sweat in the affected area. Hypothyroidism, GB syndrome, congenital and genetic disorders can also cause less production of sweat in the sweat glands.
Drugs: certain drugs are also responsible for blocking sweat secretion from sweat glands.
How To Deal With Less Or No Sweating?
Many people even on drinking sufficient amount of water may have less amount of sweat; the condition may run in their family. However, such people should be careful when they go out in sun or in hot climate or when they do rigorous exercise. Their body can become easily overheated due to lack of sweating. They are at risk of suffering from heatstroke or they may have high body temperature called hyperpyrexia.
When you feel overheated, stop any active work that you are doing and rest in a cool environment, preferably in an air-conditioned place. You can also take cool shower. If that is not available, sponge your skin with towel dipped in cool water all over your body. You can also wash your face with cool water and drink enough fluids.