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Movement disorders are neurologic conditions that cause problems with movement, such as:

• Increased movement that can be voluntary (intentional) or involuntary (unintended)
• Decreased or slow voluntary movement

There are many different movement disorders. Some of the more common types include:

• Ataxia, the loss of muscle coordination
• Dystonia, in which involuntary contractions of your muscles cause twisting and repetitive movements. The movements can be painful.
• Huntington's disease, an inherited disease that causes nerve cells in certain parts of the brain to waste away. This includes the nerve cells that help to control voluntary movement.
• Parkinson's disease, which is a disorder that slowly gets worse over time. It causes tremors, slowness of movement, and trouble walking.
• Tourette syndrome, a condition that causes people to make sudden twitches, movements, or sounds (tics)
• Tremor and essential tremor, which cause involuntary trembling or shaking movements. The movements may be in one or more parts of your body.

Causes of movement disorders include:

• Genetics
• Infections
• Medicines
• Damage to the brain, spinal cord, or peripheral nerves
• Metabolic disorders
• Stroke and vascular diseases
• Toxins

Treatment varies by disorder. Medicines can cure some disorders. Others get better when an underlying disease is treated. Often, however, there is no cure. In that case, the goal of treatment is to improve symptoms and relieve pain.

Mental disorders (or mental illnesses) are conditions that affect your thinking, feeling, mood, and behavior. They may happen over a short period of time or come and go. Some can be chronic (long-lasting). They can affect your ability to relate to others and function each day..

There are many different types of mental disorders. Some common ones include:

• Anxiety disorders, including panic disorder, obsessive-compulsive disorder, and phobias
• Depression, bipolar disorder, and other mood disorders
• Eating disorders
• Personality disorders
• Post-traumatic stress disorder (PTSD)
• Psychotic disorders, including schizophrenia

There is no single cause for mental illness. A number of factors can contribute to risk for mental illness, such as:

• Your genes and family history
• Your life experiences, such as stress or a history of abuse, especially if they happen in childhood
• Biological factors such as chemical imbalances in the brain
• A traumatic brain injury (TBI)
• Prenatal (before birth) exposure to viruses, toxic chemicals, or other substances such as alcohol and drugs.
• Use of alcohol or recreational drugs
• Having a serious medical condition like cancer
• Having few friends, and feeling lonely or isolated

Mental disorders are not caused by character flaws. They have nothing to do with being lazy or weak.

Mental disorders are common. Many Americans will be diagnosed with a mental disorder at some time in their life.

The steps to getting a diagnosis include:

• A medical history
• A physical exam and possibly lab tests, if your provider thinks that other medical conditions could be causing your symptoms
• A psychological evaluation. You will answer questions about your thinking, feelings, and behaviors.

Treatment depends on which mental disorder you have and how serious it is. You and your provider will work on a treatment plan just for you. It usually involves some type of therapy. You may also take medicines. Some people also need social support and education on managing their condition.

In some cases, you may need more intensive treatment. You may need to go to a psychiatric hospital. This could be because your mental illness is severe. Or it could be because you are at risk of hurting yourself or someone else. In the hospital, you will get counseling, group discussions, and activities with mental health professionals and other patients.