"Essential Tremor" is the most common movement disorder, which may be mild in severity, and therefore may not come to medical attention in many cases. However, essential tremor is sometimes quite debilitating and may interfere with one's daily activities. Unfortunately there is no cure for essential tremor, but there are many successful treatments, which can be beneficial to many patients. This guide briefly discusses the etiology, pathophysiology, symptoms and different treatments available for this condition. This guide may be used by medical students, general practitioners and other healthcare professionals. The patients and their family members who want to learn more about this condition may find useful information in this manual as the content of this booklet has been simplified to a great extent. This booklet represents an overview of the work of many experts in the field of movement disorders.