This book is based on new and additional information that was not available when the first book about Microscopic Colitis was published, and in some situations it expands on information that was presented in the first book in order to provide new insight into successful treatment methods. This edition looks at additional situations that might cause treatment failure in some cases, and it explores ways to overcome those obstacles. It is written with the understanding that the reader has already read and understands the information in the first book.