Mind-Body Therapy- An Overlooked Treatment Following Amputation
Andrea Wakim, MS3
Pain experienced in a limb or tissue following amputation or nerve injury is known as phantom limb pain and is experienced by 60–80% of those with an amputation.1 This pain may be short-lived or chronic, and it has been described as burning and shooting to aching and throbbing.2 Though not fully understood, phantom limb pain is thought to be neurologic in origin from disruptions in the spinothalamic tract, dorsal root ganglion, peripheral nerves, and neurotransmitters and maladaptive plasticity/cortical reorganization.1,3,4,5,6 Given these proposed mechanisms and patients’ symptoms, chronic and neuropathic pain is a common treatment target.
Treatments for phantom limb pain are continuing to expand but commonly include tricyclic antidepressants, transcutaneous nerve stimulation, sympathectomy, nerve blocks, and stump manipulation in addition to various other modalities.7,8,9 However, many of these treatments have adverse side effects and are minimally effective.9 Accordingly, recent studies have investigated the possible role of mind-body therapy for phantom limb pain due to its complex nature.
Mind-body therapy focuses on the association between the brain and body. The goals of mind-body therapy are to increase self-awareness and understanding, in order to train the mind to influence overall health.9,10 Techniques used in mind-body therapy are vast, including hypnosis, tai chi, yoga, meditation, guided imagery, and biofeedback.9 Although research has not shown overwhelming efficacy of mind-body therapy, it has indicated it as a safe and relatively low-cost adjunctive therapy for patients. In studying patients with cancer-related neuropathic pain, mind-body therapy has been shown to be devoid side effects and influential in the experience and management of pain.11 Further, studies of chronic pain have shown that mind-body therapy may improve function and quality of life and decrease polypharmacy.12,13 The efficacy of mind-body interventions as a therapy has been attributed to its multifactorial nature, as it incorporates coping skills, stress management, and cognitive restructuring into relaxation therapy.14 This allows practitioners to modify their emotions and cognition, particularly in terms of pain perception due to the role of endogenous mechanisms in pain regulation.15,16
Given these positive effects, mind-body therapy may offer improvement in symptoms for those with phantom limb pain. Studies have shown that in those with chronic phantom limb pain, hypnosis therapy and imagery therapy have significantly reduced pain intensity and frequency and improved psychological function.17,18 Further, pain reduction has been shown at six months following hypnosis and image-guided therapies, and up to 12 months following biodfeedback.18,19,20 One study found that in those partaking in mental imagery training, significantly reduced phantom limb pain intensity was associated with reduced cortical reorganization, in regards to inappropriate activation, by fMRI.21 As cortical reorganization is a proposed mechanism of phantom limb pain, this data offers support and an area of potential continued investigation. A specific type of visual therapy that has been particularly successful in those with phantom limb pain has been mirror therapy. Mirror therapy has been shown to reduce phantom limb pain and offers the potential of minimizing medication use to manage pain.22,23,24
Overall, mind-body therapy has the potential to reduce chronic phantom limb pain. It positively benefits physical and mental aspects of health, thus necessitating the need for continued consideration and research of mind-body therapy. Though significant, standardized research needs to continue to be conducted to prove its efficacy, mind-body therapy is a treatment option that is safe, accessible, and beneficial to practitioners. Given this, mind-body therapy should be considered as an adjunctive treatment for those with amputation to minimize discomfort and maximize quality of life.
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