Cyclical variations in moods and energy levels have been recorded at least as far back as several thousand years. The words "melancholia" (an old word for depression) and "mania" have their etymologies in Ancient Greek. The word melancholia is derived from melas/μελας, meaning "black", and chole/χολη, meaning "bile" or "gall", indicative of the term's origins in pre-Hippocratic humoral theories. A man known as Aretaeus of Cappadocia has the first records of analyzing the symptoms of depression and mania in the 1st century of Greece. There is documentation that explains how bath salts were used to calm those with manic symptoms and also help those who are dealing with depression. Even today, lithium is used as a treatment to<unk><unk>  which is significant because lithium could have been an ingredient in the Greek bath salt. Centuries passed and very little was studied or discovered. It wasn't until the mid-19th century that a French psychiatrist by the name of Jean-Pierre Falret wrote an article describing "circular insanity" and this is believed to be the first recorded diagnosis of<unk><unk> . Years later, in the early 1900s, Emil Kraepelin, a German psychiatrist, analyzed the influence of biology on mental<unk> s, including<unk><unk> . His studies are still used as the basis of classification of mental<unk> s today.
History of bipolar disorder
History of psychotherapy
History of depression
History of psychosurgery
History of chronic fatigue syndrome
History of mental disorders
History of Asperger syndrome
History of herbalism