About Tardive Dyskinesia

Overview

Tardive dyskinesia (TD) is a movement disorder characterized by uncontrollable and abnormal movements of the face, torso, and/or other body parts. These movements can be repetitive and may include facial grimacing, tongue protrusion, lip smacking, and involuntary movements of the arms or legs. TD is caused by prolonged use of medications that block dopamine receptors in the brain, such as antipsychotics used to treat mental illnesses like schizophrenia, bipolar disorder, and depression, as well as certain anti-nausea medications. It is believed that these medications disrupt the normal signaling of dopamine in the brain region that controls movement. The symptoms of TD can persist and have a significant impact on a person's daily life, emotional well-being, and social interactions. It's important to note that stopping or reducing these medications may not always alleviate TD symptoms. However, there are treatments available that can help manage TD.

Causes and Risk Factors

Tardive dyskinesia is a movement disorder that can be caused by prolonged exposure to certain medications, particularly antipsychotics. These medications block dopamine receptors in the brain, which can lead to abnormal movements. The exact cause of tardive dyskinesia is not fully understood, but it is believed to involve changes in the dopamine system in the brain.

Non-modifiable risk factors are factors that cannot be changed or controlled. Some non-modifiable risk factors for tardive dyskinesia include:

• Age: Being older increases the risk of developing tardive dyskinesia.
• Gender: Being female is also a risk factor for tardive dyskinesia.

Modifiable risk factors are factors that can be changed or controlled to some extent. Some modifiable risk factors for tardive dyskinesia include:

• Medication use: Taking antipsychotic medications, especially over a long period of time, is the biggest risk factor for developing tardive dyskinesia.
• Other medical conditions: Having diabetes, dementia, or a prior brain injury may increase the risk of developing tardive dyskinesia.
• Substance abuse: Having alcohol or substance abuse disorders can also increase the risk of tardive dyskinesia.

It's important to note that not everyone with these risk factors will develop tardive dyskinesia. However, being aware of these risk factors and seeking medical care if symptoms appear is crucial for early detection and management of the condition.

Symptoms

The most common early symptoms of tardive dyskinesia include involuntary facial movements. These movements can gradually appear while taking antipsychotic medication or even months or years after stopping the drug. Some of the early symptoms include:

• Grimacing
• Frowning
• Pursing the lips
• Sticking out the tongue
• Chewing or chomping
• Smacking the lips together
• Excessive blinking

As tardive dyskinesia progresses or reaches higher severity, additional symptoms may occur. These can include involuntary movements of the arms, legs, fingers, and toes. Other common symptoms that may occur with later stages or progression of tardive dyskinesia include:

• Neck twisting
• Rapid and jerking movements of the arms and legs
• Toe tapping
• Finger drumming
• Slow and writhing movements of the torso
• Hip thrusting or side swaying
• Wiggling
• An awkward gait
• A feeling of restlessness

Diagnosis

To diagnose tardive dyskinesia, doctors commonly perform the following examinations, tests, and procedures:

• Physical and medical history examination: A doctor will conduct a thorough examination of your physical health and medical history. They will ask about any medications you are taking to see if they may be causing your symptoms.
• Abnormal Involuntary Movement Scale (AIMS): This is a five-point measurement used by doctors to assess the severity of your movements, whether you are aware of the movements, and whether you are in distress as a result of them. The AIMS helps doctors evaluate your symptoms and determine if they are consistent with tardive dyskinesia.
• Blood tests and brain scans: In some cases, doctors may order blood tests and brain scans to rule out other conditions that may cause similar atypical movements. These tests can help differentiate tardive dyskinesia from other conditions such as other types of dyskinesia, Parkinson's disease, Huntington's disease, cerebral palsy, Tourette syndrome, or dystonia.

To determine the stage or severity of tardive dyskinesia, additional examinations, tests, and procedures may be performed, including:

• Continued observation of symptoms: To confirm a diagnosis of tardive dyskinesia, someone must continue to have symptoms for at least one month after being on an antipsychotic medication for three months.
• Regular monitoring with the AIMS: The AIMS is also used during follow-up visits to monitor the progression and severity of tardive dyskinesia over time. By regularly assessing the symptoms using this scale, doctors can track any changes in movement patterns and adjust treatment accordingly.

It's important to note that early detection and reporting of involuntary movements are crucial in managing tardive dyskinesia. Regular visits with a psychiatrist or healthcare professional while taking antipsychotic medications can help identify symptoms early. Additionally, people taking specific medications for digestive problems may need regular evaluations by a doctor for symptoms of tardive dyskinesia.

Treatment Options

The primary goals of treatment for TD are to manage symptoms, slow down the progression of the condition, and improve overall quality of life. Unfortunately, there is no known cure for tardive dyskinesia. However, certain medications and therapeutic procedures can help manage the symptoms and slow down their progression. Treatment options available include:

• Medications:
• Neuroleptic drug withdrawal: One of the main treatments for TD is stopping the use of neuroleptic drugs, which are known to contribute to the development of TD. This should be done under the guidance and monitoring of a doctor.
• Antipsychotic drugs: Many doctors try to reduce or modify a person's treatment using antipsychotic drugs to help manage TD symptoms.
• Vesicular Monoamine Transporter 2 (VMAT2) inhibitors: These medications were approved by the Food and Drug Administration (FDA) in 2017 specifically for the treatment of TD. They work by regulating dopamine levels in the brain, which helps reduce involuntary movements.
• Therapeutic procedures:
• Botulinum toxin injections: In some cases, injections of botulinum toxin, commonly known as Botox, may be used to reduce or limit involuntary movements, especially those affecting the face.
• Deep brain stimulation (DBS): This is a surgical procedure where electrodes are placed in specific areas of the brain to help control movement and posture. It may be considered for severe cases of TD.
• Lifestyle behavior changes:
• Well-balanced diet: Eating a nutritious diet can support overall health and well-being, which may indirectly help manage TD symptoms.
• Good quality sleep: Getting enough restful sleep is important for overall health and may help alleviate symptoms associated with TD.
• Avoiding smoking and substance use: Smoking and certain substances can worsen TD symptoms, so avoiding them is recommended.

It's important to note that each individual may respond differently to treatment options, so it's crucial to work closely with a healthcare professional to find the most effective approach for managing TD symptoms. Regular evaluations and staying up-to-date with emerging therapies can ensure that the treatment plan evolves with individual needs.

Medication dosing may be affected by many factors. Check with your health care professional about dosing for your individual situation. Other side effects can occur. Check with your health care professional or read the information provided with your medication for additional side effect information.

Progression or Complications

Tardive dyskinesia is a movement disorder that can develop as a side effect of taking certain medications, specifically neuroleptics or antipsychotic drugs. The natural progression of tardive dyskinesia can vary from person to person. In some cases, the symptoms may stabilize or even improve over time, while in others, they may worsen.

Complications that commonly occur with tardive dyskinesia include difficulties with speech and eating. The involuntary movements of the face, tongue, and jaw can make it challenging to speak clearly or swallow food properly. This can lead to social embarrassment and difficulty maintaining a healthy diet.

One approach is to switch to different medications that have a lower risk of causing TD. This can be done by working closely with a healthcare provider who will carefully evaluate the individual's specific needs and determine the best course of action.

Another treatment option is the use of medications designed to target tardive dyskinesia itself. These medications work by regulating dopamine levels in the brain, which helps control muscle movement. Additionally, certain supplements and lifestyle changes may also be recommended as part of the treatment plan.

Remember, if you or someone you know is experiencing symptoms of tardive dyskinesia, it's crucial to consult with a healthcare professional for an accurate diagnosis and appropriate treatment options.