Book excerpt: This is not a book on how to make a diagnosis, but rather starts from the point of diagnosis and covers all the main neurological conditions as such as stroke, Parkinson's disease, epilepsy and migraine well as some of the rarer conditions such as Wilson's disease showing which treatments are evidence-based but also describing those which at present need more trials. Each condition is described in the following way: definition, cause, frequency, and prognosis. Written by expert contributors, this book describes the treatment that neurologists are responsible for, indicates when to refer, shows complications of treatment, as well as drug interactions. A quick-reference pocket guide Evidence-based treatment described Adverse effects of treatment mentioned along with their likelihood Advice given on when to refer Drug treatments interactions, costs, dosages are covered extensively