Impetigo

This is a skin infection caused by a bacterium which normally lives on the skin surface without causing mischief. Occasionally it gets inside the skin and multiplies, causing a problem. This can happen during a time of reduced resistance, such as a cold, or if the skin is broken by even a minute scratch. The bacterium often lives harmlessly inside the nose. Children are frequently fond of nose-picking, and this may be the source of infection in some.

Impetigo has a characteristic golden crusty look to it, with inflamed red lumps leaking pus, and scabbing. It spreads very quickly. It is common on the hands and around the mouth and nose. The pus that leaks from the infected area is charged with millions of bacteria, and it can be transferred to other people very easily. Sensible hygiene precautions reduce the risk of other people catching it.

What to do

• Impetigo rarely causes serious illness, but needs antibiotic treatment
• Because it can spread so fast, it is a good idea to ask for a same-day appointment with your doctor