Myotonic dystrophy is part of the group of muscular dystrophies. It is the commonest inherited muscular dystrophy and has a profound effect on individuals who are diagnosed with the disease and their families. It is present for many decades of a patient's life but, unlike the other dystrophies, it also affects the organs in the body, making this a very distinctive disorder, and a very troubling one for those close to it. When the first edition of Myotonic Dystropy: The Facts published in 2002, it was widely appreciated by families, support groups, professionals, and reviewers for its simple...