Standard of Care and Symptom Management

While there is currently no cure for Huntington’s Disease-Like (HDL) syndromes, it is important to know that symptom management is highly effective and can significantly improve your daily life ^[1][2]. Because these syndromes are rare and varied, your care plan must be personalized to address your specific mix of movement, cognitive, and mood symptoms ^[2].

The primary goal of treatment is to maintain your independence and maximize your quality of life for as long as possible ^[3].

Managing Movement Symptoms (Chorea)

The involuntary, jerky movements known as chorea are often the most visible symptom. Doctors typically use a class of medications called VMAT2 inhibitors to help calm these movements ^[4].

• Tetrabenazine: This was the first drug in this class and is very effective at reducing chorea ^[4].
• Deutetrabenazine & Valbenazine: These are newer versions that stay in the body longer and generally have a “smoother” effect with a relatively lower risk of severe side effects compared to tetrabenazine ^[4][5].

Important Patient Safety Warning: All VMAT2 inhibitors work by depleting certain chemicals (monoamines) in the brain. As a result, they carry a “black-box warning” because they present a severe risk of worsening depression and increasing suicidal thoughts. These medications do not help mood symptoms—they can actively harm them. If you take these medications, you and your family must monitor your mental health daily and report any deepening depression immediately.

Addressing Mood and Behavior

For many patients and families, the psychiatric symptoms—such as irritability, depression, or a loss of motivation (apathy) —are the most challenging to manage ^[6].

• Depression and Irritability: These are often treated with standard antidepressants (like SSRIs) and behavioral strategies ^[7].
• Apathy: This is a common but often misunderstood symptom where a person loses their “get-up-and-go.” It is not the same as depression; rather, it is a neurological difficulty with initiating action ^[6][8]. It rarely responds to medication. Instead, it requires behavioral scaffolding:
  • Create visual schedules: Write down the daily plan on a whiteboard.
  • Use gentle prompts: Set phone alarms or have caregivers say, “It’s time to walk to the kitchen now,” rather than asking, “Do you want to get up?”
  • Break tasks down: Instead of “get dressed,” lay out the clothes and prompt putting on one item at a time.
• Special Considerations: In some phenocopies, like C9orf72, behavioral changes can be more prominent and may require specialized neuropsychiatric care ^[9].

The Multidisciplinary Team: Your “Gold Standard” of Care

Because HDL syndromes affect many parts of your life, the best care comes from a multidisciplinary team (MDT)—a group of specialists working together ^[10][3].

1. Physical Therapy (PT): Focuses on balance, strength, and preventing falls. This is especially important for syndromes like SCA17, where unsteadiness is a major feature ^[10].
2. Occupational Therapy (OT): Helps you find ways to continue doing daily tasks, like dressing or using a computer, by adapting your environment or using specialized tools ^[10].
3. Speech-Language Pathology (SLP): Essential for managing changes in your voice and, more importantly, ensuring you can swallow safely ^[10].
4. Palliative Care: This is not just for the end of life. Early involvement of a palliative care team can help you manage complex symptoms, navigate difficult decisions, and focus on what matters most to you ^[11][12].

Looking Ahead: Emerging Research

While we use Huntington’s management as a guide, researchers are looking for treatments tailored to specific HDL subtypes. For example, a drug called acamprosate is being studied for its potential to help patients with the C9orf72 expansion ^[13]. Always ask your doctor about new clinical trials that may be a fit for your specific genetic diagnosis.