Gaucher disease is the most common lipid storage disorder. It results from a lack of the enzyme glucocerebrosidase and exhibits very different clinical courses. Considering the wide variability in symptomatology, the 3rd edition of this text book facilitates initial diagnosis and provides clinical experience and valuable information on managing Gaucher disease. The aim of this book is to contribute to the early diagnosis and adequate treatment of as many Gaucher disease patients as possible.