Understanding Huntingtonʼs Disease: Causes, Symptoms, and Treatment



Understanding Huntingtonʼs Disease: Causes, Symptoms, and Treatment


Huntingtonʼs Disease (HD) is a neurodegenerative disorder characterized by the progressive loss of physical and mental abilities. It is a genetic condition that affects approximately 1 in 10,000 people worldwide. This article aims to provide a comprehensive understanding of HD, including its causes, symptoms, and available treatment options.

What Causes Huntingtonʼs Disease?

Genetic Mutation

The primary cause of Huntingtonʼs Disease is a genetic mutation in the huntingtin (HTT) gene. This gene provides instructions for the production of a protein called huntingtin. In individuals with HD, a specific section of the HTT gene contains an abnormally expanded repetition of the CAG nucleotide sequence. The greater the number of CAG repeats, the earlier the onset and severity of the disease.


Huntingtonʼs Disease follows an autosomal dominant pattern of inheritance. This means that if one of your parents has the mutated gene, you have a 50% chance of inheriting it and developing the disease. The onset of HD typically occurs between the ages of 30 and 50, but it can appear at any age.

Symptoms of Huntingtonʼs Disease

Motor Symptoms

The initial symptoms of HD often involve subtle changes in coordination, balance, and movement. These may include involuntary jerking or writhing movements (chorea), muscle rigidity, and difficulties with walking or swallowing. As the disease progresses, these symptoms worsen, leading to severe impairments in mobility.

Cognitive Symptoms

Huntingtonʼs Disease also affects cognitive functions, including memory, concentration, and reasoning abilities. Individuals with HD may experience difficulties with decision-making, problem-solving, and organizing their thoughts. They may also display psychiatric symptoms such as depression, anxiety, and irritability.

Emotional Symptoms

Emotional disturbances are common in HD, with individuals experiencing changes in mood and personality. They may exhibit apathy, social withdrawal, or impulsivity. Sometimes, they may even develop psychosis or exhibit aggressive behavior. These emotional symptoms can significantly impact the quality of life for both the affected individual and their loved ones.

Diagnosing Huntingtonʼs Disease

Diagnosing Huntingtonʼs Disease involves a combination of clinical evaluation, genetic testing, and neuroimaging. A thorough examination of the individual’s medical history, along with an assessment of their symptoms, helps the healthcare provider determine if HD is likely. Genetic testing is then performed to confirm the presence of the mutated HTT gene.

Treatment Options for Huntingtonʼs Disease

Currently, there is no cure for Huntingtonʼs Disease. However, various treatment options aim to manage the symptoms and improve the individual’s quality of life.


Medications can be prescribed to alleviate some of the motor, cognitive, and psychiatric symptoms associated with HD. For example, certain medications may help reduce involuntary movements (chorea), control mood disorders, or treat sleep disturbances.

Therapy and Support

Physical therapy can help individuals with HD maintain their mobility and independence for as long as possible. Occupational therapy can assist in adapting daily activities to changing abilities. Speech therapy may be recommended to address difficulties with swallowing or communication. Additionally, psychotherapy and support groups can provide emotional support for both the affected individual and their family.

Palliative Care

As HD is a progressive and incurable disease, palliative care plays a crucial role in managing symptoms and improving the individual’s overall well-being. Palliative care focuses on pain management, comfort, and addressing the emotional and psychological needs of the patient and their loved ones.

Frequently Asked Questions (FAQ)

1. Can children inherit Huntington’s Disease from their parents?

Yes, there is a 50% chance that a child will inherit the mutated gene from a parent with Huntingtonʼs Disease.

2. Are there any preventive measures to avoid developing Huntingtonʼs Disease?

Currently, there are no known preventive measures to stop the development of Huntingtonʼs Disease if an individual has the mutated gene.

3. How is Huntingtonʼs Disease different from other neurodegenerative disorders like Alzheimer’s or Parkinson’s disease?

Huntingtonʼs Disease is distinct from other neurodegenerative disorders because of its genetic nature and the specific motor, cognitive, and emotional symptoms it presents.

4. Are there ongoing research and clinical trials for Huntingtonʼs Disease?

Yes, there is ongoing research to better understand HD and develop potential treatments. Clinical trials are conducted to test the safety and efficacy of new therapies.

5. Can dietary changes or supplements help manage the symptoms of Huntingtonʼs Disease?

While a healthy diet can generally support overall well-being, there is no specific diet or supplement that has been proven to treat or cure Huntingtonʼs Disease.

6. How does Huntingtonʼs Disease affect life expectancy?

Huntingtonʼs Disease can significantly impact life expectancy. The duration of the disease varies, but individuals typically live for 15 to 20 years after the onset of symptoms.

7. Is genetic testing necessary to confirm a diagnosis of Huntingtonʼs Disease?

Genetic testing is the most reliable way to confirm the presence of the mutated HTT gene and diagnose Huntingtonʼs Disease accurately.


Understanding Huntingtonʼs Disease is crucial to provide support, care, and treatment for individuals affected by this genetic disorder. By recognizing the causes, symptoms, and available treatment options, we can ensure a better quality of life for those living with HD and their families. Continued research and advancements in medical science offer hope for improved therapies in the future.


  1. Huntington’s Disease Society of America. (n.d.). About Huntingtonʼs Disease. Retrieved from https://hdsa.org/what-is-hd/
  2. The Huntington’s Disease Society of America. (n.d.). Living with Huntingtonʼs Disease. Retrieved from https://hdsa.org/living-with-hd/

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