If the body becomes too hot, sweat glands in the skin produce more sweat.
Dr Mervyn Druian, a dental surgeon at the London Centre for Cosmetic Dentistry, says he regularly sees patients who are totally socially withdrawn because they are so embarrassed about their breath.‘The irony is that these sorts of problems are totally fixable, but people are too embarrassed to see anyone to ask for help,’ he says.
The second type of sweat is produced by the apocrine glands in the armpits, genitals and nipples.
They produce an oily liquid that is full of fat and protein — it’s thought to contribute towards sexual attraction.
Over-the-counter treatments include antiperspirant sprays containing aluminium which block the sweat glands and antibacterial agents to kill bacteria.
Some products combine both.‘For hyperhidrosis, botulinium (botox) injections are available in some places on the NHS,’ says Dr Sheraz.‘They work by blocking signals from the brain to the sweat glands, and are particularly effective for the underarm area.‘Around 20 to 30 injections are made in each armpit, which is anaesthetised beforehand with a local anaesthetic.‘The effects last from four to six months.