Rapid, Ultra-Rapid, and Ultradian Cycling in Bipolar Disorder: Definitions, Causes, and Distinctions

The episode delves into the distinctions between rapid cycling, ultra-rapid cycling, and ultradian cycling in bipolar disorder. Dr. Tracey Marks defines bipolar disorder as a mood disorder characterized by episodes of depression (lasting two weeks), mania (one week), or hypomania (four days). Rapid cycling, affecting 10-15% of individuals with bipolar disorder and more common in Bipolar II, is a course specifier, not a separate diagnosis, applied when a person experiences four or more mood episodes within a year. Ultra-rapid cycling, an unofficial term coined by researchers, describes monthly mood switches, while ultradian cycling refers to daily mood cycles, a concept that remains controversial given the DSM-5's minimum four-day duration for hypomania. A crucial distinction is drawn between mere emotional lability and a complete shift in mood state. While mood refers to one's emotional feeling, a mood state like depression or mania encompasses a broader cluster of symptoms, including changes in activity level, sleep patterns, and motivation. Emotional lability, characterized by rapid shifts from crying to laughing, is an emotional change only and not necessarily a full mood state change. This emotional lability can be observed in conditions such as Borderline Personality Disorder or Post-Traumatic Stress Disorder and represents only one facet of the complex presentation of bipolar disorder. The podcast explores various factors that can destabilize bipolar disorder and precipitate more frequent mood switches. Key among these are disruptions to circadian rhythms, often caused by irregular sleep or eating schedules, or working night shifts, as individuals with bipolar disorder are highly sensitive to biological rhythms. Other contributing factors include brain injuries, ranging from concussions to strokes, substance use (even alcohol), and underlying medical conditions such as thyroid dysfunction or multiple sclerosis, all of which can trigger or exacerbate mood instability. The role of antidepressants in managing bipolar disorder, particularly in rapid cycling cases, is critically examined. While the overall usefulness of antidepressants for bipolar disorder is still debated, some studies indicate their potential to induce mood switching in certain individuals. Consequently, Dr. Marks advises that those experiencing rapid cycling symptoms should avoid antidepressants. Instead, she suggests that a more effective treatment strategy for rapid cycling bipolar disorder often involves a combination of mood stabilizers, rather than relying on a single mood stabilizer alone, to achieve greater stability.

"rapid cycling bipolar disorder is thought to happen about ten to fifteen percent of people with bipolar disorder and tends to be more common with bipolar two than bipolar one"

"rapid cycling is a course specifier it's not a separate diagnosis instead it's a description add it to the end of the diagnosis to further explain how often you have episodes"

"the rapid cycling specifier is added if you have four or more episodes of either depression mania or hypomania in a year"

"ultra rapid cycling is not an official term in our diagnostic manual it's a term that researchers have coined and used to give an even more detailed description of how the illness plays out"

"ultra ultra rapid cycling also called ultradian is when a person has mood cycles lasting a day"

"it's important to tell the difference but shifting emotions and shifting a complete mood state"

"your mood state such as depression or mania refers to a group of symptoms that include your activity level your sleep your motivation etc"

"people with bipolar disorder are very sensitive to biologic rhythms and getting off-track with some of these basic routines can trigger a relapse of an episode or cost them to switch back and forth"

"the brain is very soft like the consistency of room-temperature butter and your skull protects it but it can still get knocked around hit you could have a concussion and you can recover from this kind of head trauma but it can you can still get mood changes"

"since some studies have shown that antidepressants can cause switching in some people if you have rapid cycling symptoms then you should avoid taking or using antidepressants"

"it may be that the best treatment for you is a combination of mood stabilizers rather than one mood stabilizer alone"