Show Working up a sweat on hot, muggy days or while exercising is only natural and, in fact, healthy. Sweating is the body’s way of cooling down. But sometimes, the body sweats too much, which is the case for people who have a medical condition called hyperhidrosis. In people with hyperhidrosis, the body’s 2 to 4 million sweat glands are overactive, causing profuse perspiration at times when others would sweat lightly (if at all). They sweat a lot even when weather or physical activity don’t warrant it. If this is the case for you or a loved one, you might consider talking to a dermatologist about it because there are treatments that can help. If you find yourself staining your shirts on a daily basis, feeling embarrassed to give a handshake because of dripping palms, sweating in the midst of a winter blizzard or coming home to a puddle of sweat in your sneakers, it may be the time to speak with a board- certified dermatologist for an evaluation. Sometimes the condition is caused by medications or a medical condition, but most of the time there is no underlying cause. At Yale Medicine Dermatology, we understand that hyperhidrosis can interfere with your day-to-day life and cause embarrassment. We do a thorough evaluation to determine if there is a cause of sweating and then customize a treatment regimen that fits your lifestyle. People who sweat excessively find that their perspiration gets in the way of their daily lives. Besides the obvious social stigma and discomfort hyperhidrosis causes, people with this condition may also get skin infections caused by fungi and yeast in places the skin gets too wet, too often. Though we know that excessive sweating is triggered by overactivity of the sympathetic nervous system, it’s unusual that a cause can be identified. Sometimes, however, hyperhidrosis can be caused by disorders of the thyroid, menopause or certain medications. The condition affects about 3% of Americans. There are two types of hyperhidrosis: Primary hyperhidrosis: Often, people who have this condition sweat excessively from only one or two parts of the body, not all over. Their feet, hands, underarms, foreheads, palms or scalps may get sopped (embarrassingly so), while the rest of their bodies sweat normally. This condition is not associated with a systemic disorder. Secondary hyperhidrosis: This type of hyperhidrosis can happen in one or two locations on the body, or it can affect the entire body. It results from some medications or from a medical condition. Here are some conditions commonly associated with secondary hyperhidrosis: There is some good news associated with the condition: Most people don’t have body odor issue from their hyperhidrosis. Even so, you may want to take steps to be sure that you don’t get body odor (bromhidrosis) associated with your excessive sweating. Here are some things you can do: While there has been research on the topic, there is no conclusive evidence at this time that regular use of these products is associated with breast cancer development, according to an article in the journal Epidemiology. There are many natural and clinical-strength formulas to try, and it’s really a matter of personal preference, so find what works best for you. Your dermatologist will take a medical history, and ask questions about your sweating patterns. Sometimes bloodwork is needed to determine if there’s an underlying medical cause for hyperhidrosis. People of all ages can experience excessive sweating. Dermatologists note that: If wearing an antiperspirant to stop wetness isn’t working well enough to control your sweating problem, there are several treatments available: Surgery, though not performed at Yale, is another option for hyperhidrosis. Yale Medicine dermatologists understand the sensitivity associated with seeing a doctor for hyperhidrosis. “Hyperhidrosis is common, and probably even more than currently realized because many patients don’t mention the issue. This is often either due to embarrassment, self-consciousness or a lack of knowledge that treatment options exist or which physicians might offer them," says Yale Medicine dermatologist Sara Perkins, MD. “Anyone concerned about their level of perspiration, is wiping sweat from their forehead regardless of temperature or activity level, or avoids raising their arms or shaking hands because of obvious moisture should see a dermatologist to discuss management options. For many patients, finally addressing the issue can be life-changing.”
Sweat is produced by glands in the deeper layer of the skin, the dermis. Sweat glands occur all over the body, but are most numerous on the forehead, the armpits, the palms and the soles of the feet. Sweat is mainly water, but it also contains some salts. Its main function is to control body temperature. As the water in the sweat evaporates, the surface of the skin cools. An additional function of sweat is to help with gripping, by slightly moistening the palms. Normal sweatingNormal, healthy sweating is caused by:
Increased sweating (hyperhidrosis)Excessive sweating is known as hyperhidrosis. Idiopathic hyperhidrosis is the most common form. It is called idiopathic because no cause can be found for it. It can develop during childhood or later in life and can affect any part of the body, but the palms and soles or the armpits are the most commonly affected areas. The excessive sweating may occur even during cool weather, but it is worse during warm weather and when a person is under emotional stress. Some known causes include:
In most cases, no investigations are required to diagnose hyperhidrosis. Occasionally, a blood test for thyroid disease is recommended. Treatment for excessive sweatingTreatment for excessive sweating depends on the cause. It may include:
Self-help strategies for hyperhidrosisSome strategies for managing hyperhidrosis at home include:
Reduced sweating (hypohidrosis)Reduced sweating is called hypohidrosis if there is partial loss of sweating, or anhidrosis if there is complete lack of sweating. This can occur for a number of reasons, which include:
Lack of sweating may create problems of temperature control and lead to steep rises in body temperature during hot weather. Occasionally, this can be life threatening. Heat stroke and heat exhaustionHeat stroke (or sun stroke) can occur in hot weather when not enough sweat is produced to keep the body cool. Symptoms can include:
Excessive loss of body salts and water can lead to a life-threatening complication known as heat exhaustion. Heat stroke can be managed, and heat exhaustion prevented, by seeking a cool, shaded place, drinking plenty of fluids and sponging the body with water, if necessary. Where to get help
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