There are three main types of hyperhidrosis: primary focal hyperhidrosis, generalized idiopathic hyperhidrosis, and secondary generalized hyperhidrosis.
Primary focal hyperhidrosis is a medical condition that is not caused by medication or another medical problem. Excessive sweating occurs on specific areas of the body (focal), including the feet, hands, underarms, and face. The sweating may be so severe that sweat drips from the hands, feet, or armpit. If the face is affected, the sweating usually occurs during a social or functional situation and can be accompanied by a reddened facial blush Primary hyperhidrosis often begins in childhood or adolescence, and it may be inherited. The condition can be difficult to handle psychologically and can lead to anxiety and depression. Physically, primary hyperhidrosis can cause skin irritations and infections. In the armpit area, it can result in a foul-smelling condition called bromhidrosis. There are a number of treatment options for primary focal hyperhidrosis, including medications and surgery.
Generalized idiopathic hyperhidrosis occurs when large areas of the body sweat. This condition is usually treated with medications.
Secondary generalized hyperhidrosis causes large areas of the body to sweat. It may be caused by a medical condition, such as menopause, diabetes, an overactive thyroid, or stroke. Medications, exercise, and heat also cause secondary generalized hyperhidrosis. The sweating can occur during sleep. This condition should be evaluated by a dermatologist for diagnosis and treatment.