This third of a series of webinars is organised by ESSIC as a new approach to science, research and especially optimal management of BPS/IC today. Each webinar focusses on a specific topic. The previous ones dealt with Physiotherapy, and Behavioural management and Diet. The subject of today is a very important part of the management. It is presented by top specialists in the field all with a very large knowledge, great experience with the clinical application as part of the global approach one has to offer the patients.