Stoma formation is a commonly performed procedure in colorectal surgery as a part of operations performed for malignant- and inflammatory bowel disease. Stoma formation is a simple, but not trivial, undertaking. When performed badly, it can leave the patients with a legacy of complications such as leakage, prolapse, parastomal hernia and retraction. Various studies have reported a complication rate of 21-70%. We performed a literature search using the Medline, Ovid and Google scholar database for all the articles published between January 1980 and December 2008. The search terms used were colostomy, ileostomy, stoma, parastomal hernia, stenosis, prolapse, necrosis and complications. The following article summarizes the common complications associated with stomas.