Localized symmetrical hyperhidrosis
The commonest type of hyperhidrosis, this affects certain body sites (localized), and both sides equally (symmetrical). The palms, the soles, the skin under the arms, the face and scalp, or combinations of these can be affected. The cause of this type is not known. It often begins in the teens, and tends to improve slowly as you get older. This type of hyperhidrosis is also called focal or primary hyperhidrosis.
Affecting the whole body can be caused by some illnesses including infections, and by some hormonal conditions including the menopause, diabetes and an overactive thyroid gland. This type of hyperhidrosis is called secondary hyperhidrosis. Some medicines can also cause excessive sweating, including fluoxetine (Prozac) and similar antidepressants. Sometimes no cause can be found. Disease or irritation of part of the sympathetic nerve pathway is a rare cause of increased sweating, either generally or in localized areas (usually on one side rather than both).
Disease or irritation
Of part of the sympathetic nerve pathway is a rare cause of increased sweating, either generally or in localized areas (usually on one side rather than both).
Can trigger or worsen hyperhidrosis, but this does not necessarily mean that the affected person is unusually anxious or stressed.
Hyperhidrosis is a feature of some rare inherited conditions. There is a trend for the common localized symmetrical type to run in families and up to a third of sufferers may have a family member with the condition.