Chapter 12: Manic-depressive Psychosis

Manic-depressive psychosis is a disease that occurs in the form of attacks of manic and depressive states or phases between which the patient reverts to normal. The alternation of phases may vary both in frequency and in form. Some patients may have rare attacks, whereas in others the attacks are frequent. Sometimes the manic and depressive states occur in regular sequence; in other cases, only manic or only depressive states may occur.