What is hyperhydrosis, or excessive sweating?
Sweating is your body’s normal mechanism to cool itself. But some people produce more sweat than needed for cooling – this is called hyperhidrosis and the condition affects around 2 to 3 per cent of the population.
There are 2 types of hyperhidrosis – primary and secondary hyperhidrosis.
Primary hyperhidrosis is the most common type, and the cause is unknown. It often starts in childhood or adolescence and many people have a family history of the condition. It tends to affect your palms, soles, armpits and sometimes, your face and scalp.
Stress and anxiety can make the sweating worse, and while it occurs in warm or cool climates, it’s usually worse at higher temperatures.
Secondary hyperhidrosis is due to an underlying medical condition. It may affect the whole body. Possible causes include diabetes, an overactive thyroid gland, obesity, menopause, infections, nerve damage from disease/injury, and some medicines (especially antidepressants).