Definitions for "Rapid cycling"
In bipolar disorder, having four or more mood episodes over a 12-month period.
Defined as having 4 or more Manic, Mixed, Hypomanic, or Depressive Episodes in any 12-month period. Episodes are marked by either a period of partial or full remission for at least 2 months or a switch to an episode of opposite polarity.
Form of bipolar disorder in which one has frequent episodes of depression or mania or a shift from one extreme to the other with no interval of normalcy; episodes last at least one week; it has been reported that they may be briefer in children, but this is controversial.