Does anyone have a clue how they decide what is a disease and what is a disorder? I am quite vexed as how some things are called disorders and some diseases. I don't understand how alcoholism is a disease caused by a willful action, but Bipolar is a disorder. I do not mean to offend anyone with these questions. You don't become anorexic until you start sticking your finger down your throat. Someone inherits a tremor from a family member it is called a disorder, no action was taken to set it into motion it just happened. Does anyone out there know and if so is it explainable? I would appreciate any insight.