Dyskinesia in Parkinson’s Disease: Causes, Symptoms, and Treatment

Dyskinesia is a common motor complication that can occur during Parkinson’s treatment, especially after several years of levodopa therapy. It refers to involuntary movements that a person cannot fully control. These movements may affect one part of the body, several body regions, or the whole body. Dyskinesia can look very different from person to person. It may appear as mild fidgeting, twitching, twisting, jerking, rocking, or flowing, dance-like movements. It can affect the arms, legs, trunk, neck, face, or mouth. For some people, dyskinesia is mild and barely disruptive. For others, it can interfere with speaking, eating, dressing, walking, social situations, and daily independence.

What causes dyskinesia in Parkinson’s? How can you recognize it? And what treatment options are available? This article explains what people with Parkinson’s and their care partners should know about dyskinesia, how it differs from tremor and dystonia, and why treatment needs to be carefully individualized.

• Physical therapy
• Occupational therapy
• Speech-language therapy
• Psychotherapy and emotional support

Relaxation techniques for stress and tension

Exercise and movement in daily life

When should you talk to your doctor?

Key takeaways: What helps with dyskinesia in Parkinson’s?

What is dyskinesia in Parkinson’s?

Dyskinesia is a medical term for abnormal, involuntary movement. In Parkinson’s disease, dyskinesia most often develops as a complication of dopaminergic treatment, especially long-term levodopa therapy. Doctors often refer to this as levodopa-induced dyskinesia.

Levodopa is one of the most important and most effective medications for Parkinson’s motor symptoms. It helps support dopamine signaling in the brain and can improve slowness of movement, rigidity, tremor, and other movement-related symptoms. Over time, however, the brain’s response to levodopa may become less smooth. Medication levels may rise and fall more noticeably, and some people develop involuntary movements during certain parts of their medication cycle.

Dyskinesia is not the same as a Parkinson’s tremor. A tremor is usually a rhythmic shaking movement that often occurs at rest. Dyskinesia is usually more irregular, flowing, writhing, fidgety, or dance-like. It can occur when Parkinson’s medication is working strongly, when medication levels are changing, or less commonly during “off” periods.

How common is dyskinesia in Parkinson’s?

Dyskinesia becomes more common the longer a person lives with Parkinson’s and the longer they use levodopa. It is closely linked to disease duration, levodopa dose, age at onset, medication sensitivity, and individual disease biology.

Many people respond very well to levodopa in the first years of Parkinson’s. This early phase is sometimes called the “honeymoon period,” because medication may work reliably and symptoms may be well controlled. As Parkinson’s progresses, however, some people develop motor fluctuations. These include:

• “On” periods, when medication is working well
• “Off” periods, when Parkinson’s symptoms return or worsen
• Dyskinesia, when involuntary movements appear, often during periods of stronger medication effect

Not everyone who takes levodopa develops dyskinesia. For some people, dyskinesia remains mild. For others, it becomes one of the most difficult parts of advanced Parkinson’s management.

What causes dyskinesia in Parkinson’s?

The exact mechanisms behind dyskinesia are complex and not fully understood. What is clear is that dyskinesia usually develops through an interaction between the progression of Parkinson’s disease and long-term dopaminergic treatment, especially levodopa.

Parkinson’s involves the gradual loss of dopamine-producing nerve cells in a brain region called the substantia nigra. Dopamine is a chemical messenger that helps regulate smooth, controlled movement. As Parkinson’s progresses, the brain has less ability to store, release, and regulate dopamine normally.

Levodopa helps compensate for this dopamine loss. But as the disease advances, the brain’s response to levodopa can become more sensitive and less stable. Instead of a smooth medication effect, some people experience peaks and dips. When levodopa levels are high, involuntary movements can appear. When levels are too low, Parkinson’s symptoms may return.

This is why dyskinesia is often related to medication timing and dose. It does not mean levodopa is “bad.” Levodopa remains a central and often highly effective Parkinson’s treatment. But in advanced Parkinson’s, finding the right balance between good control of Parkinson’s motor symptoms and too much involuntary movement can become challenging.

Peak-dose dyskinesia and medication fluctuations

The most common form is peak-dose dyskinesia. This usually occurs when levodopa levels are at or near their highest point, often one to two hours after a dose. Peak-dose dyskinesia may become more likely when levodopa doses are relatively high or when the brain has become more sensitive to changes in dopamine stimulation.

Some people also experience dyskinesia when medication levels are rising or falling. This is sometimes called diphasic dyskinesia. It can occur at the beginning or end of a levodopa dose effect.

Less commonly, abnormal postures or painful muscle contractions may occur during “off” periods. These are often more accurately described as off dystonia rather than dyskinesia. Distinguishing between dyskinesia, tremor, and dystonia is important because the treatment approach can be different.

Symptoms of dyskinesia in Parkinson’s

Dyskinesia can look and feel different from one person to another. Some people barely notice the movements themselves, while family members or care partners may see them clearly. Others find dyskinesia physically exhausting, painful, embarrassing, or disabling.

Dyskinesia may involve:

• Fidgeting or restlessness
• Jerking movements
• Twisting or writhing movements
• Rocking or swaying
• Dance-like movements
• Repetitive movements of the arms or legs
• Grimacing or facial movements
• Neck, shoulder, or trunk movements
• Movements that interfere with eating, speaking, dressing, writing, or walking

Dyskinesia can affect one body part, several body parts, or the whole body. It may be brief or last for longer periods. It may be mild, moderate, or severe. It may appear suddenly or build gradually as medication takes effect.

For some people, dyskinesia is more visible than Parkinson’s symptoms themselves. That can be emotionally difficult, especially in public or social situations. Others may prefer mild dyskinesia if it means they have better mobility and fewer “off” symptoms. This is one reason treatment decisions should be based on the person’s own goals, not only on how the movements look to others.

How dyskinesia can affect daily life

Dyskinesia can interfere with daily activities in many ways. Depending on the body parts involved, it may make it harder to:

• Button a shirt or get dressed
• Tie shoes
• Eat or drink without spilling
• Use utensils
• Write or type
• Walk safely
• Sit still
• Speak clearly
• Rest or sleep
• Feel at ease in public or social situations

Dyskinesia can also be tiring. Constant involuntary movement may use energy, increase frustration, and make people feel less in control of their body. Care partners may also feel uncertain about whether the movements are a medication side effect, worsening Parkinson’s, anxiety, or another movement problem.

How is dyskinesia diagnosed?

Dyskinesia is usually diagnosed by a neurologist or movement disorder specialist based on the person’s symptoms, medication timing, medical history, and physical examination. Because dyskinesia can come and go, it may not always be visible during a clinic visit.

It can help to keep a symptom diary that tracks:

• When Parkinson’s medications are taken
• When symptoms improve
• When “off” periods occur
• When involuntary movements appear
• Whether movements occur at peak medication effect, as medication wears off, or at another time
• Whether movements are painful, embarrassing, exhausting, or functionally limiting

Short videos can also be very helpful. A video recorded during the movement episode may help the clinician distinguish dyskinesia from tremor, dystonia, anxiety-related restlessness, medication wearing off, or other movement disorders.

Some wearable devices and digital monitoring tools may also help track movement patterns, tremor, dyskinesia, and motor fluctuations. These tools do not replace clinical judgment, but they can provide additional information, especially when symptoms vary throughout the day.

Dyskinesia, tremor, or dystonia: why the difference matters

Accurate diagnosis matters because different movement problems may require different, sometimes opposite, treatment strategies.

Peak-dose dyskinesia often suggests that dopaminergic stimulation is too strong at certain times of day. One possible strategy may be to reduce individual levodopa doses, adjust timing, or smooth out medication delivery.

A Parkinson’s tremor, however, may mean that motor symptoms are not adequately controlled. In that case, reducing medication could make symptoms worse.

Dystonia is another important distinction. Dystonia involves sustained muscle contractions or abnormal postures. In Parkinson’s, it may occur when medication levels are low, especially early in the morning or during “off” periods. Treating off dystonia may require a different approach from treating peak-dose dyskinesia.

For this reason, medication changes should always be discussed with the treating neurologist or movement disorder specialist, especially when involuntary movements are new, changing, or difficult to interpret.

How is dyskinesia treated?

Treatment depends on how severe the dyskinesia is, when it occurs, how much it affects daily life, and how it relates to “on” and “off” periods. Treatment does not always aim to eliminate every involuntary movement. The goal is to find the best possible balance between good control of Parkinson’s motor symptoms, fewer “off” periods, less troublesome dyskinesia, and better quality of life.

Treatment may include:

• Adjusting levodopa dose
• Changing medication timing
• Using smaller, more frequent doses
• Switching medication formulations
• Adding medication specifically for dyskinesia
• Considering device-aided therapies when dyskinesia is part of advanced motor fluctuations
• Using supportive therapies to improve safety, function, and coping in daily life

Medication adjustments for dyskinesia

Medication adjustment is often the first step. A clinician may consider lowering individual levodopa doses, giving smaller doses more often, or adjusting the timing of doses to reduce high medication peaks.

This can be difficult because reducing levodopa may improve dyskinesia but worsen slowness, stiffness, tremor, or “off” time. Increasing levodopa may improve mobility but worsen dyskinesia. Finding the right balance can take time and careful observation.

Sometimes clinicians adjust other Parkinson’s medications that affect levodopa response, such as COMT inhibitors, MAO-B inhibitors, dopamine agonists, or other adjunctive medications. These drugs are not all dyskinesia treatments in the same way. Some are used mainly to reduce “off” time or smooth medication response, but they may also affect dyskinesia depending on the person’s overall medication pattern.

Amantadine for levodopa-induced dyskinesia

Amantadine is an important medication option for levodopa-induced dyskinesia. It affects glutamate signaling, including NMDA receptor activity, and can reduce dyskinesia in some people with Parkinson’s.

In the United States, Gocovri, an extended-release form of amantadine, is FDA-approved for dyskinesia in people with Parkinson’s who are receiving levodopa-based therapy. It is also approved as an add-on treatment to levodopa/carbidopa for people experiencing “off” episodes.

Other amantadine formulations may also be used in clinical practice, but formulation, dosing, side effects, cost, and insurance coverage need to be considered individually.

Amantadine is not right for everyone. It can cause side effects such as dizziness, swelling, hallucinations, confusion, insomnia, nausea, low blood pressure, or mottled skin discoloration. It requires particular caution in people with kidney problems, cognitive impairment, hallucinations, or a higher risk of confusion.

Should levodopa be delayed to prevent dyskinesia?

In the past, doctors sometimes tried to delay levodopa treatment in younger people with Parkinson’s to reduce the risk of dyskinesia later. Dopamine agonists were sometimes used earlier for this reason.

Today, this approach is more nuanced. Dopamine agonists can delay the need for higher levodopa doses in some people, but they can also cause significant side effects, including impulse control disorders, sleepiness, swelling in the legs, hallucinations, and sudden sleep attacks. They also do not reliably prevent dyskinesia once levodopa becomes necessary later.

For many people, levodopa provides the best motor symptom control and the greatest improvement in daily life. Some people would rather accept mild dyskinesia than live with undertreated Parkinson’s symptoms. This is a personal and clinical decision that should be made together with a movement disorder specialist.

Apomorphine when “off” episodes and dyskinesia overlap

Apomorphine is not a treatment for dyskinesia itself. It is a dopamine agonist used to treat sudden or unpredictable “off” episodes in Parkinson’s.

It may become relevant when a person has both troublesome “off” periods and dyskinesia, because the overall medication plan then has to balance two goals: improving mobility during “off” times without worsening involuntary movements during “on” times.

For that reason, apomorphine should be understood as part of advanced motor-fluctuation management, not as a direct dyskinesia therapy.

Deep brain stimulation for troublesome dyskinesia

Deep brain stimulation, or DBS, may be considered for some people with Parkinson’s who have disabling motor fluctuations or troublesome levodopa-induced dyskinesia that can no longer be managed well with medication adjustments alone.

In Parkinson’s, DBS can reduce dyskinesia in two main ways. For some people, it allows the levodopa dose to be reduced, which may lessen levodopa-induced dyskinesia. Depending on the stimulation target, DBS may also help control dyskinesia more directly.

DBS is not a general treatment for every involuntary movement in Parkinson’s. It is usually considered when dyskinesia is part of a broader pattern of advanced motor complications, such as troublesome “off” periods, medication fluctuations, and symptoms that still respond to levodopa.

Non-medication support for dyskinesia

Non-medication therapies do not treat levodopa-induced dyskinesia directly. Their role is different: they can help people move more safely, adapt daily activities, manage stress, and stay independent when movement becomes unpredictable.

Physical therapy

Physical therapy can help with mobility, balance, coordination, posture, gait, and fall prevention. A physical therapist with Parkinson’s experience can help develop exercises that support safer movement and reduce the impact of involuntary movements on daily activities.

Physical therapy may also help people manage motor fluctuations by planning activity around the best times of day and practicing strategies for walking, turning, transferring, and recovering balance.

Occupational therapy

Occupational therapy focuses on daily function. An occupational therapist can help people adapt tasks such as dressing, eating, bathing, writing, cooking, and using household tools.

They may recommend practical strategies or assistive devices, such as weighted utensils, adaptive clothing, bathroom safety equipment, seating adjustments, grab bars, walking aids, or home modifications. The goal is to support independence and safety even when movement is unpredictable.

Speech-language therapy

If dyskinesia affects the face, jaw, tongue, breathing, or trunk, it may interfere with speech, chewing, or swallowing. In that situation, a speech-language pathologist can assess whether targeted strategies are needed, especially if there is coughing during meals, choking, weight loss, drooling, or difficulty being understood.

Psychotherapy and emotional support

Dyskinesia can be emotionally difficult. People may feel embarrassed, frustrated, anxious, or socially withdrawn. Cognitive behavioral therapy and other forms of counseling can help people cope with stress, changes in self-image, uncertainty, and the emotional burden of living with unpredictable movement symptoms.

Psychological support can also help care partners, especially when symptoms fluctuate and daily life becomes harder to predict.

Relaxation techniques for stress and tension

Relaxation techniques do not treat levodopa-induced dyskinesia directly. However, they may help reduce stress, tension, and frustration, which can make symptoms feel more manageable.

Helpful approaches may include:

• Breathing exercises
• Meditation
• Mindfulness
• Progressive muscle relaxation
• Gentle stretching
• Yoga or tai chi adapted for Parkinson’s
• Music or rhythm-based relaxation

These approaches should be seen as supportive tools, not replacements for medical treatment. They may be especially helpful when dyskinesia feels harder to manage because of stress, fatigue, frustration, or overstimulation.

Exercise and movement in daily life

Exercise does not directly treat levodopa-induced dyskinesia. Its value is broader: regular movement can support strength, balance, flexibility, mood, sleep, and confidence, which may make it easier to stay active even when symptoms fluctuate.

The most helpful exercise plan is one the person can do safely and consistently. Some people prefer dancing, boxing-inspired exercise, cycling, swimming, tai chi, yoga, strength training, walking, or Nordic walking. Others may need a structured program developed with a physical therapist.

The most important point is that movement should fit the person’s abilities, symptoms, fall risk, and preferences. People with significant balance problems, freezing of gait, heart disease, severe dyskinesia, or frequent falls should speak with their healthcare team before starting a new exercise program.

When should you talk to your doctor?

You should talk to your neurologist or movement disorder specialist if involuntary movements:

• Are new or getting worse
• Interfere with eating, dressing, walking, speaking, or sleep
• Cause pain, exhaustion, or embarrassment
• Increase fall risk
• Occur at predictable times after medication
• Appear when medication is wearing off
• Are hard to distinguish from tremor or dystonia
• Make you want to skip or change medication

Do not stop or change Parkinson’s medication on your own. Even small changes in levodopa timing or dose can significantly affect mobility, “off” periods, dyskinesia, mood, sleep, and daily function.

Key takeaways: What helps with dyskinesia in Parkinson’s?

Dyskinesia in Parkinson’s usually refers to involuntary movements related to long-term dopaminergic treatment, especially levodopa. It can range from mild fidgeting to disruptive, whole-body movements that interfere with daily life.

The most important step is accurate diagnosis. Dyskinesia must be distinguished from tremor, dystonia, anxiety-related restlessness, and “off” symptoms because treatment decisions can be very different.

Treatment is individualized. It may include levodopa adjustments, medication timing changes, amantadine, treatment of “off” periods, DBS in selected cases, and supportive therapies such as physical therapy, occupational therapy, speech-language therapy, psychotherapy, relaxation techniques, and regular exercise.

The goal is not simply to suppress every involuntary movement. The goal is to reduce troublesome dyskinesia while preserving mobility, minimizing “off” time, improving safety, and keeping daily life as manageable as possible.