noun
periodic psychosis
A psychiatric term for a psychotic disorder that recurs periodically. Used in clinical contexts.
周期性精神病は、周期的に精神病症状が現れる疾患です。
Periodic psychosis is a disorder in which psychotic symptoms appear periodically.
Compound of 周期 (periodic) + 性 (nature) + 精神病 (psychosis). A modern medical term.