Generalized anxiety disorder is an anxiety disorder characterized by excessive, uncontrollable and often irrational worry about everyday things, disproportionate to the actual source of worry. As presented by ICD-10, the dominant symptoms are variable but include complaints of persistent nervousness, trembling, muscular tensions, sweating, lightheadedness, palpitations, dizziness, and epigastric discomfort. Fears that the patient or a relative will shortly become ill or have an accident are often expressed.