My GP said he will only prescribe it if I sign a form stating that I accept its risks. Is there anything else I can do? I am waiting for an appointment to see a skin consultant.

John Osborne

Intertrigo is a rash that affects skin folds, such as the groin and armpits, and is caused by a combination of friction, heat and moisture. It can affect anybody but is more common in people who are overweight, those with diabetes, and those who have a tendency to sweat more. The rash is usually inflamed and often involves a fungal or bacterial skin infection. If it is recurrent or not responding to initial treatment, a doctor may take a swab or skin scraping to identify any infection.

Treatment usually involves an antifungal and/or antibiotic (either as cream or tablet), and a mild steroid cream for relieving the inflammation and itching. Timodine is one of several combination creams commonly used for short periods to treat intertrigo. Timodine contains a mild steroid (0.5% hydrocortisone), antifungal, antiseptic and barrier component. Intermittent use of mild steroid creams is usually safe if applied thinly for short periods (a week is often enough for less severe cases), although prolonged use and more potent steroid creams are best avoided due to the risk of them causing skin thinning and ulceration.

The likelihood of further episodes may be reduced by addressing any underlying cause or risk factors. So, in your case, losing weight as you are trying to do is a good idea. Good control of your diabetes should also help. Try to keep affected areas clean and dry; if necessary, you could use standard talcum powder. Cycle clothing that takes the moisture away from your body, followed by a shower after a ride, should go some way to helping.

Dr Matt Brooks

Cycling GP