Pyruvate kinase deficiency is a rare genetic disease that causes red blood cells to break apart. Despite an ever-growing understanding of the disease, it remains unfamiliar to many healthcare professionals, and the information available to patients is limited. This superbly illustrated workbook is designed to help patients equip themselves with the best information about their condition to improve the conversations they have about it with their doctors and nurses. Contents: * What is pyruvate kinase deficiency? * What causes PK deficiency? * How is PK deficiency diagnosed? * How will PK deficiency affect me or my child? * Treating PK deficiency * What sort of monitoring might I need? * Special situations * When should I see my doctor? * What can I do to help myself?.