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California Neurodegenerative Disease Registry (CNDR):​ Huntington’s Disease (HD)​​


brainStarting on July 1, 2023, Health and Safety Code Section 103871 requires hospital, facility, physician and surgeon, and other health care providers to report to California Department of Public Health (CDPH) each case of a neurodegenerative disease that was designated as reportable by CDPH. However, in light of needed initial onboarding to the reporting systems and corresponding logistics, CDPH will be flexible with the reporting due dates for the first reporting period and will assist providers with the process.
All Hospitals, facilitys, physicians and surgeons, or other health care providers diagnosing or providing treatment for a patient with a neurodegenerative disease such as Huntington’s disease (HD)​ must review the ā€‹CNDR Neurodegenerative Disease Guide to Reporting (PDF).* ā€‹ā€‹ā€‹ā€‹

HD is an inherited disorder that causes nerve cells (neurons) in parts of the brain to gradually break down and die. The disease attacks areas of the brain that help to control voluntary (intentional) movement, as well as other areas. People living with HD develop uncontrollable dance-like movements (chorea) and abnormal body postures, as well as problems with behavior, emotion, thinking, and personality.

For example, uncontrolled movements in the person's fingers, feet, face, or torso. These movements are signs of chorea. They can get more intense when the person is nervous or distracted; as HD progresses, the person's movements can become more extreme and obvious.

Symptoms of HD typically appear in middle-aged people (adult HD). They can also appear in children (juvenile HD), but this is rare. The disease gets worse over time.

Early signs of HD can vary, but often include mild clumsiness or problems with balance or movement, cognitive or psychiatric symptoms (problems with thinking or emotion), and changes in behavior.

For some people, chorea can make it harder to walk, which increases the chances of falling. Some people with HD do not develop chorea; instead, they may become rigid (stiff) and move very little or not at all. This condition is called akinesia. Other people may start out with chorea but become rigid as the disease progresses.

In addition to chorea, some individuals have unusual fixed (unchanging) postures, which is known as dystonia. The two movement disorders (akinesia and dystonia) can blend or alternate.

Other symptoms may include tremor (unintentional back-and-forth movement in the person's muscles) and unusual eye movements. The eye movements can happen early in the disease.

Physical changes may include slurred speech and problems with swallowing, eating, speaking, and especially walking. People with HD may lose weight because of problems with feeding, swallowing, choking, and chest infections. Other symptoms may include insomnia (having trouble sleeping), loss of energy, fatigue, and seizures. Eventually the person will need to stay in bed or in a wheelchair.

Changes in thinking (cognitive changes) may include problems with attention or judgment and having difficulty solving problems or making decisions.

Other changes may include trouble with driving, prioritizing (deciding which things are more important to do and which are less important), and difficulty organizing, learning new things, remembering a fact, putting thoughts into words, or answering a question.

These cognitive changes get worse as the disease progresses, until people with HD are not able to work, drive, or care for themselves.

When the cognitive problems are severe enough that the person cannot function in daily life, the condition is described as dementia. But many people with HD stay aware of their environment and can express their emotions.

Changes in behavior may include mood swings; feeling irritable (cranky); not being active; or feeling apathetic (uninterested), depressed, or angry. These symptoms may decrease as the disease progresses. But in some people, the symptoms can continue and may include angry outbursts, thoughts of suicide, deep depression, and psychosis (losing touch with reality). People with HD may withdrawal from social activities.​​


*​CNDR Neurodegenerative Disease Guide to Reporting (PDF)​​.​

**Huntington's Disease (HD). (n.d.). National Institute of Neurological Disorders and Stroke. ​​

Quick Links
  • California State Assembly Bill (AB) 133
  • California State Health and Safety Code (HSC) CHAPTER 1.7. California Neurodegenerative Disease Registry Program [103871 - 103871.2] (Chapter 1.7 added by Stats. 2021, Ch. 143, Sec. 20.)
  • Alzheimer’s Disease​
  • Amyotrophic Lateral Sclerosis​ (ALS)​​​​
  • Multiple Sclerosis
  • CNDR Patient Information Brochure (PDF)
  • CNDR Patient Record Request Information
Frequently Asked Questions

  • Health Insurance Portability and Accountability (HIPAA)

  • CNDR Patient Information

Resources for Reporting​​

  • CNDR Neurodegenerative Disease Guide to Reporting (PDF)

  • CNDR Electronic and Manual Reporting Registration Form (PDF)​

  • CalREDIE Neurodegenerative Disease Reporter Account Authorization Form​​ (PDF)​

  • California Neurodegenerative Disease Registry HL7 CDA EICR Data Elements (xlsx)​

  • ​California Neurodegenerative Disease Registry HL7 Electronic Reporting Constraints (xlsx)​​​


Resources
  • CDPH Alzheimer’s Program

  • Michael J. Fox Foundation

  • National Multiple Sclerosis Society: Southern California Chapter

  • Multiple Sclerosis Center of California

  • California Stem Cell Agency

  • National Institute of Environmental Health Sciences: Neurodegenerative Diseases

​Contact Us

California Neurodegenerative Diseases Registry
P.O. Box 997377 MS 7205
Sacramento, CA 95899-7377
Phone: (916) 731-2500
Email:  CDSRBhelp@cdph.ca.gov​
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