This course provides an overview of the field of Interstitial Lung Diseases (ILDs). Participants will learn which diagnostic procedures should be applied based on given clinical circumstances, and what difficulties can arise in ILD diagnosis. Special emphasis will be given to HRCT courses, as these typically guide the diagnosis of many ILDs; this will be accompanied by sessions on ILD-pathology. Therapy remains a challenging aspect of treating many ILDs, so this course will provide participants with insight into the pros and cons of specific ILD treatments. Interdisciplinary ILD board discussions will be held between specialists and course participants, and course attendees will have the opportunity to bring their own challenging cases and discuss them with leading experts. Further, there will be a dedicated discussion session on the impact of comorbidities on the clinical course of ILD treatment.