Tardive dyskinesia

Tardive dyskinesia
Synonyms Linguofacial dyskinesia, tardive dystonia, tardive oral dyskinesia[1]
Tardive dyskinesia is believed to involve the neurotransmitter dopamine
Pronunciation
  • /ˈtɑːrdɪv ˌdɪskɪˈniːʒə/
Specialty Psychiatry
Symptoms Involuntary, repetitive body movements[1]
Causes Neuroleptic medications (antipsychotics, metoclopramide)[1][2]
Diagnostic method Based on symptoms after ruling out other potential causes[1]
Similar conditions Huntington's disease, cerebral palsy, Tourette syndrome, dystonia[2]
Prevention Using lowest possible dose of neuroleptic medication[3]
Treatment Stopping neuroleptic medication if possible, switching to clozapine[1]
Medication Valbenazine, tetrabenazine, botulinum toxin[1][4]
Prognosis Variable[1]
Frequency 20% (atypical antipsychotics) 30% (typical antipsychotics)[5]

Tardive dyskinesia (TD) is a disorder that results in involuntary, repetitive body movements.[1] This may include grimacing, sticking out the tongue, or smacking of the lips.[1] Additionally there may be rapid jerking movements or slow writhing movements.[1] In about 20% of people decreased functioning results.[3]

Tardive dyskinesia occurs in some people as a result of long-term use of neuroleptic medications (antipsychotics, metoclopramide).[1][2] These medications are usually used for mental illness, but may also be given for gastrointestinal or neurological problems.[1] The condition typically only develops after months to years of use .[1][3] The diagnosis is based on the symptoms after ruling out other potential causes.[1]

Efforts to prevent the condition include not using or using the lowest possible dose of neuroleptics.[3] Treatment include stopping the neuroleptic medication if possible or switching to clozapine.[1] Other medications such as valbenazine, tetrabenazine, or botulinum toxin may be used to lessen the symptoms.[1][4] With treatment some see a resolution of symptoms while others do not.[1]

Rates in those on atypical antipsychotics are about 20% while those on typical antipsychotics have rates of about 30%.[5] Risk is greater in older people.[3] The term "tardive dyskinesia" first came into use in 1964.[3]

Signs and symptoms

Tardive dyskinesia is characterized by repetitive, involuntary movements. Some examples of these types of involuntary movements include:[6]

Rapid, involuntary movements of the limbs, torso, and fingers may also occur.[7] In some cases, an individual's legs can be so affected that walking becomes difficult or impossible.[8] These symptoms are the opposite of patients who are diagnosed with Parkinson's disease. Parkinson's patients have difficulty moving, whereas tardive dyskinesia patients have difficulty not moving.[9]

Respiratory irregularity, such as grunting and difficulty breathing, is another symptom associated with tardive dyskinesia, although studies have shown that the prevalence rate is relatively low.[10]

Tardive dyskinesia is often misdiagnosed as a mental illness rather than a neurological disorder,[11] and as a result patients are prescribed neuroleptic drugs, which increase the probability that the patient will develop a severe and disabling case, and shortening the typical survival period.[12]

Other closely related neurological disorders have been recognized as variants of tardive dyskinesia. Tardive dystonia is similar to standard dystonia but permanent. Tardive akathisia involves painful feelings of inner tension and anxiety and a compulsive drive to move the body. In some extreme cases, afflicted individuals experience so much internal torture that they lose their ability to sit still. Tardive tourettism is a tic disorder featuring the same symptoms as Tourette syndrome. The two disorders are extremely close in nature and often can only be differentiated by the details of their respective onsets. Tardive myoclonus, a rare disorder, presents as brief jerks of muscles in the face, neck, trunk, and extremities.[9]

"AIMS Examination": This test is used when psychotropic medications have been prescribed because patients sometimes develop tardive dyskinesia due to prolonged use of antipsychotic medications. The Abnormal Involuntary Movement Scale (AIMS) examination is a test used to identify the symptoms of tardive dyskinesia (TD). The test is not meant to tell whether there is an absence or presence of tardive dyskinesia. It just scales to level of symptoms indicated by the actions observed. The levels range from none to severe. The AIMS examination was constructed in the 1970s to measure involuntary facial, trunk, and limb movements. It is best to do this test before and after the administration of the psychotropic drugs. Taking the AIMS consistently can help to track severity of TD over time.[13][14]

Cause

Tardive dyskinesia was first described in the 1950s shortly after the introduction of chlorpromazine and other antipsychotic drugs.[15] However, the exact mechanism of the disorder remains largely uncertain. The most compelling line of evidence suggests that tardive dyskinesia may result primarily from neuroleptic-induced dopamine supersensitivity in the nigrostriatal pathway, with the D2 dopamine receptor being most affected. Neuroleptics act primarily on this dopamine system, and older neuroleptics, which have greater affinity for the D2 binding site, are associated with high risk for tardive dyskinesia.[16] The D2 hypersensitivity hypothesis is also supported by evidence of a dose-response relationship, withdrawal effects, studies on D2 agonists and antagonists, animal studies, and genetic polymorphism research.[16]

Given similar doses of the same neuroleptic, differences among individuals still exist in the likelihood of developing tardive dyskinesia. Such individual differences may be due to genetic polymorphisms, which code for D2 receptor binding site affinity, or prior exposure to environmental toxins. Decreased functional reserve or cognitive dysfunction, associated with aging, mental retardation, alcohol and drug abuse, or traumatic head injuries, has also been shown to increase risk of developing the disorder among those treated with neuroleptics.[16] Antipsychotic drugs can sometimes camouflage the signs of tardive dyskinesia from occurring in the early stages; this can happen from the individual having an increased dose of an antipsychotic drug. Often the symptoms of tardive dyskinesia are not apparent until the individual comes off of the antipsychotic drugs; however, when tardive dyskinesia worsens, the signs become visible.[17]

Other dopamine antagonists and antiemetics can cause tardive dyskinesia, such as metoclopramide and promethazine, used to treat gastrointestinal disorders. Atypical antipsychotics are considered lower-risk for causing TD than their typical counterparts with their relative rates of TD of 13.1% and 32.4% respectively in short-term trials with haloperidol being the main typical antipsychotic utilised in said trials.[18] Quetiapine and clozapine are considered the lowest risk agents for precipitating TD.[18] From 2008, there have been reported cases of the anti-psychotic medication aripiprazole, a partial agonist at D2 receptors, leading to tardive dyskinesia.[19] As of 2013, reports of tardive dyskinesia in aripiprazole have grown in number.[20] The available research seems to suggest that the concurrent prophylactic use of a neuroleptic and an antiparkinsonian drug is useless to avoid early extrapyramidal side-effects and may render the patient more sensitive to tardive dyskinesia. Since 1973 the use of these drugs has been found to be associated with the development of tardive dyskinesia.[21][22]

Risk factors

An increased risk of tardive dyskinesia has been associated with smoking in some studies,[23][24] although a negative study does exist.[25] There seems to be a cigarette smoke-exposure-dependent risk for TD in antipsychotic-treated patients.[26] Elderly patients are also at a heightened risk for developing TD,[6] as are females and those with organic brain injuries or diabetes mellitus and those with the negative symptoms of schizophrenia.[18] TD is also more common in those that experience acute neurological side effects from antipsychotic drug treatment.[18] Racial discrepancies in TD rate also exist, with Africans and African Americans having higher rates of TD after exposure to antipsychotics.[6] Certain genetic risk factors for TD have been identified including polymorphisms in the genes encoding the D3, 5-HT2A and 5-HT2C receptors.[27]

Prevention

Prevention of tardive dyskinesia is achieved by using the lowest effective dose of a neuroleptic for the shortest time. However, with diseases of chronic psychosis such as schizophrenia, this strategy must be balanced with the fact that increased dosages of neuroleptics are more beneficial in preventing recurrence of psychosis. If tardive dyskinesia is diagnosed, the causative drug should be discontinued. Tardive dyskinesia may persist after withdrawal of the drug for months, years or even permanently.[28][29] Some studies suggest that physicians should consider using atypical antipsychotics as a substitute to typical antipsychotics for patients requiring medication. These agents are associated with fewer neuromotor side effects and a lower risk of developing tardive dyskinesia.[30]

Recent studies have tested the use of melatonin, high dosage vitamins, and different antioxidants in concurrence with antipsychotic drugs (often used to treat schizophrenia) as a way of preventing and treating tardive dyskinesia. Although further research is needed, studies reported a much lower percentage of individuals developing tardive dyskinesia than the current prevalence rate for those taking antipsychotic drugs.[31]

Treatment

Valbenazine has been approved by the FDA for tardive dyskinesia.[32] Tetrabenazine, which is a dopamine depleting drug, is sometimes used to treat tardive dyskinesia and other movement disorders.[7] However, it is only approved to treat chorea associated with Huntington's disease. The related VMAT2 inhibitor, reserpine, has also been tried in one small randomised double-blind placebo-controlled trial as a treatment for TD with success,[33] as has α-methyldopa.[33] Ondansetron has shown some benefit in experimental studies on tardive dyskinesia and a variety of anti-Parkinsonian medications are used such as donepezil,[34][35] baclofen,[36][37][38] and pramipexole.[39] Clonidine may also be useful in the treatment of TD, although dose-limiting hypotension and sedation may hinder its usage.[40] Botox injections are used for minor focal dystonia, but not in more advanced tardive dyskinesia.[41] Benzodiazepines are an effective treatment for TD, however their use is limited by the development of tolerance which requires ever increasing doses of the benzodiazepines to be used to attenuate TD symptoms. The most popular benzodiazepine for the treatment of TD is clonazepam.[42] Vitamin B6 has been reported to be an effective treatment for TD in two randomised double-blind placebo-controlled trials.[43][44] In males, the branched-chain amino acid formula Tarvil, containing the amino acids valine, isoleucine, and leucine in a 3:3:4 ratio was reported as beneficial for motor symptoms in a small, non-blinded study.[45]

Epidemiology

Tardive dyskinesia most commonly occurs in patients with psychiatric conditions who are treated with antipsychotic medications for many years. The average prevalence rate has been estimated to be around 30% for individuals taking antipsychotic medication, such as that used to treat schizophrenia.[46] A study being conducted at the Yale University School of Medicine has estimated that "32% of patients develop persistent tics after 5 years on major tranquilizers, 57% by 15 years, and 68% by 25 years."[47] More drastic data was found during a longitudinal study conducted on individuals 45 years of age and older who were taking antipsychotic drugs. According to this research study, 26% of patients developed tardive dyskinesia after just one year on the medication. Another 60% of this at-risk group developed the disorder after 3 years, and 23% developed severe cases of tardive dyskinesia within 3 years.[48] According to these estimates, the majority of patients will eventually develop the disorder if they remain on the drugs long enough.[49]

Elderly patients are more prone to develop tardive dyskinesia, and elderly women are more at-risk than elderly men. The risk is much lower for younger men and women, and also more equal across the sexes.[50] Patients who have undergone electro-convulsive therapy or have a history of diabetes or alcohol abuse also have a higher risk of developing tardive dyskinesia.[30]

Several studies have recently been conducted comparing the prevalence rate of tardive dyskinesia with second generation, or more modern, antipsychotic drugs to that of first generation drugs. The newer antipsychotics appear to have a substantially reduced potential for causing tardive dyskinesia. However, some studies express concern that the prevalence rate has decreased far less than expected, cautioning against the overestimation of the safety of modern antipsychotics.[31][51]

A physician can evaluate and diagnose a patient with tardive dyskinesia by conducting a systematic examination. The physician should ask the patient to relax, and look for symptoms like facial grimacing, eye or lip movements, tics, respiratory irregularities, and tongue movements. In some cases, patients experience nutritional problems, so a physician can also look for a gain or loss in weight.[30]

Apart from the underlying psychiatric disorder, tardive dyskinesia may cause afflicted people to become socially isolated. It also increases the risk of dysmorphophobia and can even lead to suicide. Emotional or physical stress can increase the severity of dyskinetic movements, whereas relaxation and sedation have the opposite effect.[52]

References

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  2. 1 2 3 "Tardive Dyskinesia". NORD (National Organization for Rare Disorders). 2015. Retrieved 11 June 2017.
  3. 1 2 3 4 5 6 Vijayakumar, D; Jankovic, J (May 2016). "Drug-Induced Dyskinesia, Part 2: Treatment of Tardive Dyskinesia.". Drugs. 76 (7): 779–87. PMID 27091214.
  4. 1 2 "Tardive Dyskinesia Information Page". National Institute of Neurological Disorders and Stroke.
  5. 1 2 Carbon, M; Hsieh, CH; Kane, JM; Correll, CU (March 2017). "Tardive Dyskinesia Prevalence in the Period of Second-Generation Antipsychotic Use: A Meta-Analysis.". The Journal of clinical psychiatry. 78 (3): e264–e278. PMID 28146614.
  6. 1 2 3 "Tardive Dyskinesia". Medscape Reference. WebMD. 9 February 2012. Retrieved 25 November 2013.
  7. 1 2 National Institutes of Health, National Institute of Neurological Disorders and Stroke. (2011). Ninds tardive dyskinesia information page. Retrieved from website: http://www.ninds.nih.gov/disorders/tardive/tardive.htm
  8. ↑ Nasrallah, H. (2003, Sept). Tardive dyskinesia. Retrieved from http://www.nami.org/Content/ContentGroups/Helpline1/Tardive_Dyskinesia.htm
  9. 1 2 Duke University Health System. (2010, May 17). Additional movement disorders. Retrieved from http://www.dukehealth.org/services/neurological_disorders/care_guides/additional_movement_disorders/
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  14. ↑ Montana State Hospital
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  20. ↑ Alexander, J (Mar 2013). "Aripiprazole induced tardive dyskinesia-accruing evidence". Aust N Z J Psychiatry. 47 (3): 289–90. PMID 22990431. doi:10.1177/0004867412461058.
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  31. 1 2 Lerner, Vladimir (2011). "Handbook of Schizophrenia Spectrum Disorders, Volume III": 109–34. ISBN 978-94-007-0833-4. doi:10.1007/978-94-007-0834-1_6. |chapter= ignored (help)
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  39. ↑ Erkan, A; Pirildar, S; Acarer, A; Akdeniz, F (2011). "Efficacy of Low-dose Pramipexole Augmentation in the Treatment of Refractory Psychotic Depression Complicated with Tardive Dyskinesia A Case Report" (PDF). Bulletin of Clinical Psychopharmacology (in Turkish). 21 (4): 353–55. doi:10.5455/bcp.20111029071711.
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  41. ↑ Brasic, James Robert (February 9, 2012). Benbadis, Selim, R, ed. "Tardive Dyskinesia". eMedicine.
  42. ↑ Bhoopathi, Paranthaman Sethupathi; Soares-Weiser, Karla (2006). Bhoopathi, Paranthaman Sethupathi, ed. "Benzodiazepines for neuroleptic-induced tardive dyskinesia". Cochrane Database of Systematic Reviews (3): CD000205. PMID 16855954. doi:10.1002/14651858.CD000205.PUB2.
  43. ↑ Lerner, V; Miodownik, C; Kaptsan, A; Cohen, H; Matar, M; Loewenthal, U; Kotler, M (September 2001). "Vitamin B6 in the Treatment of Tardive Dyskinesia: A Double-Blind, Placebo-Controlled, Crossover Study" (PDF). The American Journal of Psychiatry. 158 (9): 1511–14. PMID 11532741. doi:10.1176/appi.ajp.158.9.1511.
  44. ↑ Lerner, V; Miodownik, C; Kaptsan, A; Bersudsky, Y; Libov, I; Sela BA; Witztum, E (November 2007). "Vitamin B6 treatment for tardive dyskinesia: a randomized, double-blind, placebo-controlled, crossover study". Journal of Clinical Psychiatry. 68 (11): 1648–54. PMID 18052557. doi:10.4088/jcp.v68n1103.
  45. ↑ Richardson, Mary Ann; Bevans, Margaret L.; Read, Laura L.; et al. (2003). "Efficacy of the Branched-Chain Amino Acids in the Treatment of Tardive Dyskinesia in Men". American Journal of Psychiatry. 160 (6): 1117–24. PMID 12777270. doi:10.1176/appi.ajp.160.6.1117.
  46. ↑ Llorca, Pierre-Michel; Chereau, Isabelle; Bayle, Frank-Jean; et al. (2002). "Tardive dyskinesias and antipsychotics: A review". European Psychiatry. 17 (3): 129–38. PMID 12052573. doi:10.1016/S0924-9338(02)00647-8.
  47. ↑ Glenmullen, Joseph (2001). Prozac Backlash: Overcoming the Dangers of Prozac, Zoloft, Paxil, and Other Antidepressants With Safe, Effective Alternatives. New York: Simon & Schuster. p. 38. ISBN 978-0-7432-0062-2. ::referring to Glazer, William M.; Morgenstern, Hal; Doucette, John T. (1993). "Predicting the long-term risk of tardive dyskinesia in outpatients maintained on neuroleptic medications". Journal of Clinical Psychiatry. 54 (4): 133–9. PMID 8098030.
  48. ↑ Jeste, Dilip V.; Caligiuri, Michael P.; Paulsen, Jane S.; et al. (1995). "Risk of Tardive Dyskinesia in Older Patients: A Prospective Longitudinal Study of 266 Outpatients". Archives of General Psychiatry. 52 (9): 756–65. PMID 7654127. doi:10.1001/archpsyc.1995.03950210050010.
  49. ↑ Whitaker, Robert (2002). Mad in America: Bad Science, Bad Medicine, and the Enduring Mistreatment of the Mentally Ill. Perseus.
  50. ↑ Marshall, DL; Hazlet, TK; Gardner, JS; et al. (2002). "Neuroleptic drug exposure and incidence of tardive dyskinesia: A records-based case-control study". Journal of managed care pharmacy. 8 (4): 259–65. PMID 14613418.
  51. ↑ Tarsy, Daniel; Lungu, Codrin; Baldessarini, Ross J. (2011). "Epidemiology of tardive dyskinesia before and during the era of modern antipsychotic drugs". In Vinken, P. J.; Bruyn, G. W. Handbook of Clinical Neurology. Hyperkinetic Movement Disorders. 100. pp. 601–16. ISBN 978-0-444-52014-2. PMID 21496610. doi:10.1016/B978-0-444-52014-2.00043-4.
  52. ↑ Jeste, Dilip V.; Caligiuri, Michael P. (1993). "Tardive Dyskinesia". Schizophrenia Bulletin. 19 (2): 303–15. PMID 8100643. doi:10.1093/schbul/19.2.303.
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