Physical treatments also include non-pharmaceutical options, such as electroconvulsive therapy, transcranial magnetic stimulation, light therapy and exercise.
We have not found any systematic reviews on this topic that meet the Library’s inclusion criteria. Pending enough primary studies, we invite reviews on this topic to be conducted. Alternatively, we will endeavour to conduct our own review to fill this gap in the Library. June 2020
Bright light therapy
What is bright light therapy? Bright light therapy, also called phototherapy, involves the use of a bright artificial light to improve depressive mood. It has long been used in psychiatric practice, usually for the treatment of seasonal affective disorder. The mechanism by which bright light therapy regulates mood is unclear. It has been suggested to have modulating effects on serotonin and melatonin and on the synchronisation of circadian rhythms, which is why it is often accompanied by sleep deprivation. This topic assesses the use of bright light therapy for depressive symptoms of bipolar disorder. What is the evidence for bright…
What is electroconvulsive therapy (ECT)? In ECT, a seizure is electrically induced after the patient has been given a short-acting anesthetic and is asleep. Although viewed as controversial, ECT is a well established psychiatric treatment with good evidence to support its effective and safe use. ECT is most often used as a treatment for severe depression that has not responded adequately to other treatments. It is also used as a first line treatment in depression where an urgent response is required as it works more quickly than medications. ECT’s efficacy and safety are affected by a number of factors such…
What is exercise therapy? Individuals with serious mental illnesses are more likely to be sedentary than the general population and are consequently at high risk for chronic medical conditions associated with inactivity. Physical activity reduces the risk of these medical conditions, and positive psychological effects have also been reported, including improved quality of life. Exercise also has the potential to alleviate secondary symptoms including depression, low self-esteem and social withdrawal. What is the evidence for exercise therapy? Low quality evidence is unable to determine the benefits of exercise for the symptoms of bipolar disorder. More research is needed. June 2020
What is sleep deprivation? Sleep deprivation, or ‘wake therapy’, involves being deprived of total sleep for approximately 36 hours straight, or partially sleeping for 3 to 4 hours followed by 20 to 21 hours of wakefulness. Sleep deprivation has been associated with rapid improvements in depressed mood, but may also trigger mania. Sleep deprivation is impractical as an ongoing treatment but is explored in an effort to uncover the mechanisms behind its effectiveness for depression. What is the evidence for sleep deprivation? Moderate quality evidence suggests sleep deprivation may improve depression in people with bipolar disorder. Review authors report rates…
Transcranial direct-current stimulation
What is transcranial direct-current stimulation (tDCS)? tDCS is a non-invasive form of brain stimulation similar to transcranial magnetic stimulation, but instead of using magnets, it uses a low-intensity, constant current applied through scalp electrodes. Generally, anodal stimulation induces an increase of cortical excitability, whereas cathodal stimulation decreases cortical excitability, with effects that last beyond the stimulation period. Dose involves current intensity, duration of stimulation and size of electrodes. The use of tDCS in bipolar disorder is in the early stages of investigation for relief of symptoms in people who are not satisfied with their response to medication. What is the…
Transcranial magnetic stimulation
What is transcranial magnetic stimulation (TMS)? TMS is a non-invasive method to stimulate nerve cells in superficial layers of the brain. Traditionally, studies assessing the effectiveness of TMS have been limited by small samples, a range of stimulation parameters and most studies lack long-term follow up assessments. Control comparisons also differ – ‘sham’ TMS may involve tilting the stimulation coil against the scalp by 45 or 90 degrees, thus reducing the degree of brain stimulation, or use of a “placebo” coil of identical appearance. These placebo methods usually involve a ‘click’ noise but no magnetic field and no twitching sensation…
Vagus nerve stimulation
What is vagus nerve stimulation (VNS)? VNS provides indirect modulation of brain network activity through the stimulation of cranial nerves. Invasive VNS involves surgical implantation of a small pulse generator under the skin which is programmed to deliver long-lasting, intermittent electrical stimulation of the vagus nerve. Non-invasive stimulation involves attaching a stimulator to the outer ear close to the ear canal, which delivers electrical impulses through the skin to the vagus nerve. What is the evidence for VNS? Low quality evidence is unable to determine any benefit of invasive VNS for bipolar disorder. June 2020
Green - Topic summary is available.
Orange - Topic summary is being compiled.
Red - Topic summary has no current systematic review available.