CYCLIC ILLNESS 1 By N., Sam M.S. - 5 1. any disorder marked by changing stages. 2. bipolar I disorder wherein both periods of mania and periods of depression take place at varying times, separate from each other. CYCLIC ILLNESS 1: "PMDD can be viewed as a cyclic illness." Related Psychology Terms PMDD: Can It Be Cured? Dissociative Identity Disorder Using the Hamilton Depression Rating Scale: A Case Study on Grief MANIC-DEPRESSIVE REACTION (CIRCULAR AND MIXED TYPES) MANGANESE POISONING ADOLESCENCE (Theories) BDI-II Assessment A Comparison of Maternal and Paternal Filicide ARISTOTLE (384-322 B.C.) Piaget’s Theory of Cognitive Development Cite this page: N., Sam M.S., "CYCLIC ILLNESS 1," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/cyclic-illness-1/ (accessed August 17, 2022).