In The Mystery Ulcers – we see how a mystery illness destroys skin, flesh and even bone when it strikes – the Buruli ulcer can leave sufferers horribly disfigured.
Scientists in Australia, where it was first recorded, are working on research to find out how it occurs and why outbreaks are so localized.
They hope their research will help the tens of thousands of people who suffer from Buruli ulcers, particularly in Africa.
Part of a 29 x 25-minute documentary series produced for the BBC. These films can be bought individually or as a series.