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Dystonia
Make an AppointmentHow Is Dystonia Diagnosed?
Dystonia is primarily diagnosed through a detailed neurological and movement assessment.
Because involuntary movements can occur in several neurological conditions, a specialist will evaluate the pattern of muscle contractions, when symptoms began and how they affect daily activities.
The assessment may include:
- Type and pattern of involuntary movements
- Areas of the body affected
- Age when symptoms first appeared
- Activities or movements that trigger symptoms
- Changes in symptoms with stress, fatigue or physical activity
- Other neurological symptoms
- Family history and previous medical conditions
- Medication history and previous injuries
- Impact on mobility, daily function and quality of life
The approach may differ between children and adults, depending on the suspected underlying cause and clinical findings.
What Tests Are Used to Diagnose Dystonia?
There is no single test that confirms every form of dystonia. Investigations are selected according to the patient's symptoms, medical history and suspected cause.
1. Neurological and Movement Assessment
A neurologist evaluates the characteristics of abnormal movements and postures to distinguish dystonia from other conditions, such as tremor, tics or spasticity. Clinical assessments may also help monitor symptom progression and response to treatment.
2. Brain Imaging (MRI)
Magnetic resonance imaging (MRI) may be recommended to identify structural abnormalities, previous brain injuries or other neurological conditions contributing to the symptoms. Some patients with dystonia may have normal MRI findings.
3. Blood and Laboratory Tests
Blood or other laboratory investigations may be recommended when metabolic, autoimmune or other medical causes are suspected.
4. Genetic Testing
Genetic testing may be considered when dystonia begins during childhood, runs in the family or has features suggesting a genetic cause. Results are interpreted alongside the patient's clinical findings to help establish the diagnosis.
5. Levodopa Trial
In selected patients, particularly those with childhood-onset dystonia, a supervised trial of levodopa may help identify dopa-responsive dystonia, a form that can improve significantly with this medication.
What Are the Treatment Options for Dystonia?
There is no single treatment suitable for everyone with dystonia. Treatment depends on the type, underlying cause, age, symptom severity and impact on daily activities.
The main goals are to reduce involuntary movements, relieve discomfort, improve mobility and support everyday function and independence.
1. Medication
Oral medications may help reduce abnormal muscle activity or manage associated symptoms. Depending on the condition, specialists may consider medicines such as muscle relaxants or other medications that influence movement control.
For patients with dopa-responsive dystonia, levodopa may help improve symptoms, depending on their individual response to treatment. The choice of medication is individualised according to the patient's diagnosis, age, response and potential side effects.
2. Botulinum Toxin Injections
Botulinum toxin injections help reduce excessive muscle activity by temporarily relaxing targeted muscles.
They are commonly used to treat several forms of focal dystonia, including:
- Cervical dystonia affecting the neck
- Blepharospasm affecting the eyelids
- Certain jaw, voice or limb dystonias
Injection sites and doses are selected according to the muscles affected. Treatment may need to be repeated periodically to maintain symptom control.
3. Rehabilitation and Supportive Therapy
Rehabilitation helps patients maintain mobility, physical function and independence.
Depending on individual needs, treatment may include:
- Physiotherapy: To support mobility, posture and movement.
- Occupational therapy: To improve hand function and everyday activities.
- Speech and language therapy: To address communication or swallowing difficulties.
- Mobility and gait training: To support walking, balance and movement.
For children, rehabilitation may also support development, school participation, communication and age-appropriate activities.
4. Treatment of Underlying Conditions
When dystonia is associated with another neurological or medical condition, treatment may also focus on managing that condition. This may involve collaboration between neurologists, rehabilitation specialists and other healthcare professionals.
5. Deep Brain Stimulation (DBS)
For selected patients with severe or disabling dystonia that remains inadequately controlled despite appropriate treatment, Deep Brain Stimulation (DBS) may be considered.
DBS is a neurosurgical treatment in which electrodes are implanted in specific areas of the brain involved in movement control. These electrodes are connected to an implanted neurostimulator that delivers controlled electrical stimulation to help regulate abnormal movement-related brain activity.
The globus pallidus internus (GPi) is a commonly used DBS target for dystonia.
DBS may help reduce involuntary movements and improve daily function in selected patients. However, it does not remove the underlying cause of dystonia, and the degree of improvement varies between individuals.
When Is DBS Recommended for Dystonia?
DBS may be considered when dystonia:
- Causes severe or disabling involuntary movements
- Significantly affects mobility, independence or quality of life
- Remains inadequately controlled despite appropriate treatment
- Is considered suitable for surgery following specialist assessment
The decision depends on several factors, including the type and cause of dystonia, the patient's age, previous treatments and overall health.
DBS may be an option for selected adults and children following multidisciplinary evaluation.
Can Children With Dystonia Undergo DBS?
DBS may be considered for selected children with severe and disabling dystonia, particularly when symptoms remain inadequately controlled with other treatments.
Assessment involves reviewing the child's neurological diagnosis, underlying cause, developmental stage, functional needs and potential benefits and risks of surgery.
At SJMC, paediatric movement disorders care can involve a Paediatric Neurologist with movement disorders expertise, working alongside neurosurgical and rehabilitation specialists when DBS is being considered.
What Happens Before, During and After DBS Surgery?
Before DBS Surgery
Patients undergo a comprehensive assessment to determine whether DBS is appropriate.
This may include:
- Confirmation of the dystonia diagnosis and underlying cause
- Review of previous treatments
- Assessment of movement symptoms and daily function
- Brain imaging and surgical evaluation
- Discussion of expected benefits, limitations and potential risks
During DBS Surgery
A neurosurgeon implants electrodes into the selected brain target. These are connected to a neurostimulator implanted elsewhere in the body, usually beneath the skin of the chest.
The surgical approach and anaesthetic technique are tailored to the individual patient.
After DBS Surgery
Following surgery, the DBS device is programmed and adjusted according to the patient's symptoms and response.
Improvement may occur gradually, particularly in certain forms of dystonia. Regular follow-up and programming are important to optimise stimulation and monitor treatment outcomes.
Dystonia Care and Treatment at Subang Jaya Medical Centre (SJMC)
At Subang Jaya Medical Centre (SJMC) in Malaysia, adults and children with dystonia can receive specialist neurological assessments and personalised treatment based on their condition and individual needs. Depending on the patient's condition, care may involve:
- Adult Movement Disorders Neurology: Assessment and medical management of dystonia in adults.
- Paediatric Neurology: Assessment and care for children with dystonia and other movement disorders.
- Neurosurgery and Neuromodulation: Evaluation and surgical treatment options, including Deep Brain Stimulation (DBS) for selected patients.
- Rehabilitation Medicine: Support for movement, mobility, physical function and daily activities.
For selected patients with dystonia, Deep Brain Stimulation (DBS) may be considered following a comprehensive specialist assessment. Through a multidisciplinary approach, treatment is tailored to each patient's diagnosis, symptoms and individual needs.
At SJMC, our neuroscience specialists can help you better understand your condition and the available treatment options. Whether you or your loved one is experiencing symptoms, seeking a second opinion or exploring treatment options, our team is here to assist you.
Looking for sepcialist advice on dystonia? Call or WhatsApp our TeleConnect Centre for assistance with your appointment booking.
FAQs About Dystonia on Diagnosis & Treatment