Podoconiosis (image) Wellcome Trust Caption Podoconiosis, a type of elephantiasis (leg swelling) found in farming communities in the tropics, is triggered by an abnormal reaction to irritant mineral particles found in soils of volcanic origins amongst people who cannot afford shoes. Credit Gail Davey Usage Restrictions This image may be used in conjunction with stories relating to this press release and/or the Footwork initiative only. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.