They may simulate manic-depressive or cyclic insanity.
"The Glands Regulating Personality"
Louis Berman, M.D.
In the form of cyclic insanity known as the manic-depressive psychosis, mania alternates with depression, as if the personality were dominated wholly in turn by one or the other of these two instincts of the ego.
"The Glands Regulating Personality"
Louis Berman, M.D.
A probable diagnosis of manic-depressive psychosis was made by the prison physician."
"Studies in Forensic Psychiatry"
Bernard Glueck