Professional / Research


donatenew

The Dystonia Society is offering medical students the opportunity to learn more about dystonia through an essay competition where they can earn money in the process!

We are pleased to announce that the Dystonia Society’s seed funding for a new research project in 2015/6 has been awarded to Dr Tom Gilbertson of Ninewells Hospital in Dundee. Below he explains his project:

Dopamine is a chemical called a neurotransmitter that passes information across neurones in the brain. Abnormal dopamine movements in people with dystonia across a part of the brain called the striatum (which is in the basal ganglia) has been recognised for over a decade. How or if these abnormalities play a role in causing the symptoms of dystonia remains unclear.

The aim of our study is to apply recent advances in understanding the role of striatal dopamine in order to generate new insights into the basic biology of the disease. We will use functional magnetic resonance imaging (fMRI) to see what is going in the brains of people with dystonia and detailed computational modelling of the role of dopamine in the selection of muscles for movement (a task in which the striatum has an important role).

In the fMRI study, patients with focal dystonia will do a computer game during the scan and their performance compared to a healthy control group. This will allow us to estimate indirectly the level of dopamine signalling in the striatum of people with dystonia and look at differences with the controls. Results from this study will be incorporated into the details of a computer model which will be used to simulate dystonia postures. We think that this combination will produce a deeper understanding of the role of dopamine in the disease and yield new treatment approaches.

Commissioning

Click to on booklet image for PDF version

Click to go to relevant section:


Introduction

This brief guide has been developed to support the appropriate commissioning of treatment for dystonia.

Dystonia is a very complex condition which has far-reaching consequences for patients,primary and secondary healthcare services, society and the wider system.

The guide aims to raise the profile of dystonia as a long term condition, and seeks to demonstrate the whole system impact when patients are either not treated at all, or outside of effective treatment time parameters – in particular, it examines the negative impact on the quality of life.

This guide does not attempt to introduce a ‘one size fits all’ approach to the management and treatment of dystonia, but seeks to provide an opportunity for commissioners and providers to work together, to ensure that key service and treatment standards are commissioned and managed at a local level.

It does not promise to be a panacea, but rather a discussion document that can be used by secondary care clinicians with their local commissioners, to ensure that dystonia services and treatment are both better understood and commissioned appropriately within the new NHS.

What is adult-onset dystonia?

Dystonia is a neurological condition characterised by involuntary and sustained muscle spasms which can force affected parts of the body into abnormal movements or postures. Dystonia is an umbrella term covering a number of conditions. In most cases, it affects the motor pathways in the brain that control recruitment and movement of muscles causing them to perform an action that leads to unwanted spasms. It is estimated to affect 70,000 people in the UK.

Dystonia leads to sustained abnormal postures or repetitive movements of the affected body part. Typically, the abnormal postures are not fixed, and slow writhing movements can occur (athetosis) where the dominant muscle activity switches from agonist to antagonist and back again. Dystonia can affect muscles involved in movement, posture, speech, sight and mobility but does not affect intellect. Living with dystonia can be painful and debilitating as well as embarrassing and stigmatising. Work, social activities and quality of life may be significantly impacted.

Dystonia is a chronic disorder, but the vast majority of dystonias do not impact cognition, intelligence, or shorten a person's life span. The main exception to this is dystonia that occurs as a symptom of another disease or condition that can cause such complications. Adult-onset dystonia represents around 90% of all primary dystonias. It appears in mid-to-late life and usually only affects a single body area. In a minority of cases (around 25% of cases) it spreads to a second area and in around 10% of cases to three or more areas. Symptoms can include twisting or pulling of the neck (around 65% of cases), forced eye closure and /or functional blindness (20%), difficulties with eating and/or speaking (20%) and hard /arm problems including writing (20%) (based on information from Dystonia Society members n.b. numbers add to more than 100% as for some people more than one area is affected).

Dystonia causes varying degrees of disability and pain, from mild to severe. Whilst there is currently no cure, there are treatments available.

So why does it matter?

Dystonia affects quality of life, employment, daily activity and social interaction as well as causing pain and mental health problems. Unmanaged dystonia places a range of unnecessary burdens on the NHS.

The effect of adult-onset dystonia on the individual

Dystonia has a significantly adverse impact on all quality of life (QoL) measures as well as on mental health. Among those with focal dystonia, QoL reports were as follows (at baseline on day of treatment) (Statistics from Gudex 1998):

  • Mobility 53% of people report mobility problems
  • Daily activities 64% report problems with daily activities and 23% report problems with self-care
  • Pain 83% report severe or moderate pain
  • Mental Health 65% report moderate or severe anxiety/depression. It is increasingly accepted that both stress and anxiety may also exacerbate symptoms of dystoniaand that psychological problems are caused not only by the symptoms but alsopossibly by the condition itself.

On all these dimensions, QoL for people with focal dystonia is significantly worse than the general population. Untreated neck dystonia also has a significant effect on employment status. In one study, 69% reported reduced productivity, 31% reported reduced hours or responsibilities and 19% reported unemployment as a result of their condition (Molho 2009).

In addition, 75% of people with dystonia mentioned an impact on their social life and 80% feel self-conscious about how their condition makes them look (Dystonia Society 2011).

Experience of dystonia

  • "My dystonia made me wonder whether I could carry on. I lost my job as my neck was resting on my right shoulder, and the pain was excruciating."
  • "I could deal with the condition and people staring if I was not so tired and had no pain. I feel like dystonia is a person that has taken over my life."
  • "I would love to have my life back – I have two small children, and I don’t want them to say when they’re older, we couldn’t do this or that because my mum was always unwell.“

The effect of untreated adult-onset dystonia on the health and social care services

There is consensus that failure to manage adult-onset dystonia results in substantial burdens for the NHS. These can include:

  • Avoidable visits to GPs
  • Avoidable steps and delays in a patient pathway
  • Avoidable injury due to falls
  • Multiple visits to hospital for diagnostic investigations
  • Avoidable visits to hospitals for elective treatment
  • High analgesia costs
  • Avoidable use of mental health treatments
  • Additional treatment due to long-term abuse of prescription andover-the-counter medications

Additional costs could be caused by admissions to secondary mental healthcare. Dystonia can also result in additional burdens on the social care services – especially due to eye dystonia, which usually appears in the elderly and can affect independent living.

The management of dystonia is a big NHS and wider societal issue, and should be seen as a key priority along with other long term conditions. The profile of dystonia should be raised within CCGs alongside other LTCs such as diabetes, COPD and pain, so that services are commissioned based on the needs of local populations taking into account local factors.

How is adult-onset dystonia treated?

Botulinum toxin (BoNT) injections

In most cases of focal dystonia, the usual first line treatment is regular BoNT injections into the affected muscles, usually around every 12 weeks. BoNT affects the nerves at their junction with the muscle. It prevents the release of acetylcholine from the nerve endings and thereby prevents the involuntary muscle contractions. It also has a significant beneficial effect on pain. BoNT is a very effective treatment when administered at the appropriate time and frequency.

Medications

In a minority of cases, BoNT injections are not effective due to the patient developing immunity, unmanageable side effects or because the dystonia is too complex or widespread to identify injection sites. In these cases, medications such as anticholinergics, GABA agonists and anti-convulsants individually or in combination are often tried although evidence in well defined trials is lacking. However, for many patients, these medications either do not work or the side effects are unmanageable but a minority find them of significant benefit.

Surgery

As a last resort for patients with severe dystonia, Deep Brain Stimulation (DBS) is considered to be a good option. In addition, other surgical interventions such as peripheral denervation or myotomy /myomectomy are sometimes tried.

Other allied health treatments

Physiotherapy

Studies have shown that physiotherapy enhances the effectiveness of BoNT in treating neck dystonia and high percentages of patients report it as being helpful. Because of the specialised nature of dystonia, this treatment needs to be provided by a neurophysiotherapist familiar with the condition.

Psychological support

Because of the high prevalence of mental health conditions among patients with dystonia, psychological therapies such as cognitive behavioural therapy (CBT) are often desirable.

Pain management

Referral to pain management has been shown to be effective for treatment of chronic pain caused by conditions such as dystonia.

Patient Experience of treatment (this feedback patients clearly illustrates the impact of effective treatment on people’s lives, and supports the argument for a consistent approach to the availability of dystonia treatment through the NHS.

  • Once I was put on toxin treatment, I was able to return to work, and live my life again.
  • Now I am getting treatment for my dystonia, I rarely see my GP. Before treatment I went monthly for 3 years.
  • I was unable to work before my treatment, I could not drive, was in pain and could not concentrate.
  • Once I started on treatment I went from 24 tablets a day, including gabapentin and diclofenic, to nothing.
  • My disabling symptoms were immediately reversed once I was treated with BoNT.

The need to commission high quality, effective dystonia services

Botulinum toxin (BoNT)

A recent audit undertaken by the Dystonia Society and the British Neurotoxin Network identified that treatment regimes were delivered within wide ranging timescales. There is significant variation throughout the UK in the way that patient care is delivered and in outcomes. The audit also identified that there is huge variation in the way that dystonia treatment is coded and charged, ranging from outpatient appointment with procedure to day case.

Allied health treatments

The same audit identified wide variation in access to treatments such as neurophysiotherapy, psychological support and pain management with large numbers of patients reporting being unable to access these treatments.

These variations are unacceptable in the longer term and need to be addressed by commissioners and providers working together.

What is needed?

CCGs have a statutory duty to improve the quality of services being commissioned by the NHS. In particular, they have a duty to reduce health inequalities throughout the UK. If CCGs are to be successful in their mandate, they need to start looking at dystonia services in the same way as they look at other high profile high cost specialities, by:

  • Recognising the significant adverse impact of quality of life, if untreated
  • Recognising the importance of timely toxin administration
  • Treating dystonia as a long term condition including the provision of allied treatments
  • Reducing clinical variation
  • Adopting a standardised approach to coding treatment
  • Commissioning using best practice principles
  • Supporting providers in increasing productivity
  • Supporting providers in the reduction or removal of waste
  • The development of integrated care pathways and service models

If the NHS is to succeed in its QIPP challenge, dystonia services must be robustly and effectively commissioned on the same principles as other chronic diseases. Services need to be clinically effective, patient centred, responsive, integrated, timely and multidisciplinary.

  • The commissioning of high quality dystonia services based on these principleswill improve outcomes for patients
  • The commissioning of well coordinated services for dystonia including timely access to BoNT and allied healthcare professional input will reduce the numberof steps a patient takes within an individual pathway; it will also result in areduction in the number of hand-offs between professionals
  • The commissioning of timely treatment for dystonia through BoNT will result in fewer GP appointments
  • The commissioning of an effective treatment pathway for dystonia patients with an appropriate integrated treatment plan with access to a fullmultidisciplinary team, will improve the patient experience and outcome – enabling them to actively manage their condition. Patients will also benefit from reduced pain and reduced risk of abusing pain relief medication, and improved mental health.

The appropriate commissioning of timely dystonia BoNT treatment will have enormous  impacts on the whole system, allowing patients to be more active and independent and to remain in employment.

Conclusion

Currently, the best treatment option for dystonia is the injection of BoNT into the affected muscles. Whilst the access to BoNT is improving, and treatment regimes are timely in most instances, there remains inconsistency in:

  • Access of initial and subsequent effective treatment
  • Providing a holistic approach to patient care
  • The coding and charging of services
  • Adverse impact on quality of life

If CCGs are to commission services effectively and appropriately, we need to ensure that dystonia treatment is available to all, that clinical variation is reduced or avoided completely, and that patient outcomes are improved.

This guide has been developed to illustrate the importance of effective treatment for dystonia, and is aimed at encouraging positive and open communication between providers and commissioners to ensure that dystonia patients get access to the treatment and services that they need and deserve.

Click here for references

Last reviewed September 2013

Disclaimer
The Dystonia Society provides the information on this page as general information only. It is not intended to provide instruction and you should not rely on this information to determine diagnosis, prognosis or a course of treatment. It should not be used in place of a professional consultation with a doctor.
The Dystonia Society is not responsible for the consequences of your decisions resulting from the use of this information, including, but not limited to, your choosing to seek or not to seek professional medical care, or from choosing or not choosing specific treatment based on the information. You should not disregard the advice of your physician or other qualified health care provider because of any information you receive from us. If you have any health care questions, please consult the relevant medical practitioner.

Albanese A, Asmus F, Bhatia KP, Elia AE, Elibol B, Filippini G, Gasser T, Krauss JK, Nardocci N, Newton A, Valls-Solé J, (2011). EFNS guidelines on diagnosis and treatment of primary dystonias. J Eur J Neurol, 18:5 – 18.

Dauer W, Burke R, Greene P and Fahn S (1998). Current concepts on the clinical features, aetiology and management of idiopathic cervical dystonia. Brain 121, 547– 560.

Delnooz C, Horstink M, Tijssen M, van de Warrenburg B (2009). Paramedical treatment in primary dystonia: A systematic review. Movement disorders, Vol 24. No 15, pp 2187– 2198.

Dias F, Kummer A, Doyle F, Harsanyi E, Cardoso F, Fontenelle L, and Teixeira A (2011). Psychiatric disorders in primary focal dystonia and in Parkinson’s disease. Neuropsychiatric disease treatment, 7: 111 – 116.

Gudex C, Hawthorne M, Butler A, Duffey P (1998). Effect of dystonia and botulinum toxin treatment on health-related quality of life. Movement disorders, Vol 13, No 6.

Malone M, Strube M, Scogin F (1998). Meta-analysis of non-medical treatments for chronic pain. Pain, 34 (3): 231 – 244.

Molho E, Agarwal N, Regan K, Higgins D, Factor S (2009). Effect of cervical dystonia on employment: A retrospective analysis of the ability of treatment to restore pre morbid employment status. Movement disorders, Vol 24. No 9, pp 1384 – 97.

Ron M (2009). Primary focal dystonia – a disease of brain and mind: motor and psychiatric manifestations have a common neurobiological basis. Journal Neurosurgery Psychiatry 80:1059.

Slawek J, Friedman A, Potulska A, Krystkowiak P, Gervais C, Banach M, Ochudlo S, Budrewicz S, Reclawowicz D, Rynkowski M, Opala G (2007). Factors affecting the health related quality of
life of patients with cervical dystonia and the impact of botulinum toxin type A injections. Funct Neurol, 22(2): 95–100.

Tassorelli C, Mancini F, Balloni L, Pacchetti C, Sandrini G, Nappi G and Martignoni E (2006). Botulinum toxin and neuromotor rehabilitation: An integrated approach to idiopathic cervical dystonia. Movement disorders, Vol 21. No 12, pp 2240 – 2243.

The British Neurotoxin Network (2012). Responses to questionnaire. www.neurotoxinnetwork.org

The Dystonia Society (2011). Dystonia: A guide to good practice for health and social care professionals. www.dystonia.org.uk

The Dystonia Society (2012). Responses to questionnaire.

The Dystonia Medical Research Foundation, the US patient organisation that plays a leading role in dystonia research, has just announced the research projects they are funding this the year. Below are listed some of the projects they have selected.

 

To see the full list and learn more click here (the article is on page 8)

“Regulatory RNA Networks in Inherited Dystonia”
Pedro Gonzalez-Alegre, MD, University of Iowa
Now in the second year of a three year award, this project is advancing our understanding of the dystonia mechanism by closely examining neurons for the consequences of dystonia-causing mutations in the DYT1 and DYT6 genes. TorsinA, the protein associated with the DYT1 gene for early onset dystonia, is believed to have a role in monitoring other proteins in cells. THAP1,
the protein associated with the DYT6 gene for early and late onset primary dystonias, is believed to influence how torsinA functions. One of the aims of Dr. Gonzalez-Alegre’s work is therefore to characterize the precise disruptions in neurons linked to both mutated torsinA and THAP1.

“Identification of Novel Drug Targets for DYT1 Dystonia” BioFocus DPI, The Netherlands
This continuing project, which began in 2009, is the first step toward the rational design of dystonia therapeutics by identifying new drug targets. The major objective is to identify genes and proteins that modify the effects of the DYT1 dystonia mutation on torsinA, the protein coded by the DYT1 gene. Several hundred hits have been identified from a library of more than 4,500 candidates.
These hits represent proteins and genes that potentially can rescue cells from lost torsinA function, which is believed to be the primary cause of DYT1 dystonia. The next step of the project is to identify a small number of the most promising targets to be used in drug discovery efforts. The DMRF is proud to partner with Tyler’s Hope for a Dystonia Cure on this project.

“Assessing the Role of GNAL Pathway Genes in Primary Dystonia”
Tatiana Fuchs, PhD, Mount Sinai School of Medicine
GNAL is one of the latest genes discovered to cause primary dystonia. This gene plays a role in how neurons receive signals. Dr. Fuchs and her team are examining other genes involved in this process. This research has the
potential to reveal additional genes for primary dystonia, contributing to our understanding of the dystonia mechanism and providing a basis for development
of new therapies.

“Morphological-Functional Analysis of the Endoplasmic"
N. Charles Harata, MD, PhD, University of Iowa
This project is designed to identify how dystonia changes the way neurons function. Dr. Harata is also taking a close look at a possible link between dystonia and calcium ions, which play a critical role in the function of cells.

“Encoding of Interhemispheric Interactions in Mirror Dystonia: A Window to the Physiology of Dystonia”
Asha Kishore, MD, Sree Chitra Tirunal Institute for Medical Sciences and Technology, India
Dr. Kishore and team are using transcranial magnetic stimulation (TMS) to examine the phenomenon of “mirror dystonia” and gain a better understanding of the changes in brain activity associated with dystonia movements. Mirror dystonia occurs when, for example, an individual with writer’s cramp in the dominant hand attempts to write with the opposite hand, and yet dystonia symptoms persist in the unused hand.

“Structural Characterization of Torsin1A with its Interactors at the Nuclear Envelope”
Thomas Schwartz, PhD
Massachusetts Institute of Technology
Dr. Schwartz’s project seeks to learn more about the function of the dystonia protein torsinA by defining its three-dimensional structure. Within the atomic structure lie the clues to fully understand its function and the ability to influence this function by developing specific drugs.

“Patient-specific Induced Pluripotent Stem (iPS) Cells as a Model for DYT1 Dystonia”
Nutan Sharma, MD, PhD and Cris Bragg, PhD
Massachusetts General Hospital
The objective of this work is to establish a collection of dystonia cell models as a public resource for the research community. These models enable multiple dystonia research groups to study defects in neurons affected by the DYT1 gene mutation associated with early onset dystonia.

stay-informed

 

support-services

 

professionals-old

 

parents-carers