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Hyperhidrosis Disorder (Excessive Sweating)

Hyperhidrosis is the medical term for excessive sweating. It refers to any abnormal sweating, such as sweating when it’s not hot. People who sweat excessively often soak through their clothing or drip sweat. Regular antiperspirants don’t work well for those with this condition.

Hyperhidrosis disorder is a condition that results in excessive sweating. This sweating can occur in unusual situations, such as in cooler weather, or without any trigger at all. It can also be caused by other medical conditions, such as menopause or hyperthyroidism.

Hyperhidrosis can be uncomfortable. However, several treatment options can provide some relief.

Types and causes of Hyperhidrosis

Sweating is a natural response to certain conditions, such as warm weather, physical activity, stress, and feelings of fear or anger. With hyperhidrosis, you sweat more than usual for no apparent reason. The underlying cause depends on which type of hyperhidrosis you have.

Primary focal hyperhidrosis

Sweating mainly occurs on your feet, hands, face, head, and underarms. It usually starts in childhood. About 30 to 50 percentTrusted Source of people with this type have a family history of excessive sweating.

Secondary generalized hyperhidrosis

Secondary generalized hyperhidrosis is sweating caused by a medical condition or as a side effect of certain medications. It generally starts in adulthood. With this type, you might sweat all over your body, or in just one area. You might also sweat while you’re sleeping.

Symptoms of excessive sweating include:

  • excessive sweating that’s occurred for at least six months without an apparent reason
  • sweat that occurs on both sides of your body in roughly the same amount
  • incidents of excessive sweating at least once a week
  • sweating that interferes with your daily activities (such as work or relationships)
  • excessive sweating that began when you were younger than 25 years old
  • not sweating in your sleep
  • a family history of hyperhidrosis
These factors might indicate that you have primary focal hyperhidrosis.
Sweating all over or excessively in one area might indicate that you have secondary generalized hyperhidrosis.


A starch-iodine test involves putting iodine on the sweaty area. Starch is sprinkled on this area when the iodine dries. If the starch turns dark blue, you have excess sweating.
A paper test involves putting a special kind of paper on the sweaty area. The paper is weighed after it absorbs your sweat. A heavier weight means you’ve sweated excessively.
You might sit in a sauna or sweat cabinet for the test. If you have hyperhidrosis, it’s likely that your palms will sweat more than expected while in the sweat cabinet.


There are several treatment options for excessive sweating.

Specialized antiperspirant

An antiperspirant containing aluminum chloride. This antiperspirant is stronger than those available over the counter and is often used to treat mild cases of hyperhidrosis.

Botox (botulinum toxin)

Botox injections may be used to treat severe hyperhidrosis. They block the nerves that stimulate your sweat glands. You usually need several injections before this treatment becomes effective.
Botox injections are a new treatment option for people with hyperhidrosis. You may be a candidate for Botox if your sweating fails to improve with prescription antiperspirants. Botox has been FDA-approved for people who sweat excessively from their armpits. It may also be used “off-label” to reduce sweating in other areas, such as the hands, feet
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Botox for Hyperhidrosis