Apomorphine is one of the oldest and, at the same time, most potent drugs for the treatment of Parkinson´s disease. Its use was for decades inhibited by the occurrence of dopaminergic side effects and the lack of practical equipment for its delivery. But we learned how to reduce the side effects of apomorphine. And the subsequent development of suitable injection pens and portable pumps has made apomorphine a practically useful therapeutic option. With the fourth edition of this book, the authors give a compact and comprehensible overview of apomorphine in Parkinson´s disease and practical guidelines for its use associated with the hope that this fascinating drug and excellent therapy can be made available to more Parkinson patients.