Yes, you can have the Huntington's gene and not know it for many years because symptoms often don't appear until adulthood (30s-40s), a state called being presymptomatic, and early signs can be subtle like mood changes or clumsiness, making them easy to miss or attribute to something else. People can carry the mutated gene for decades before noticeable motor, cognitive, or psychiatric issues arise, though brain changes can occur much earlier.
The decision whether to test or not is intensely personal and there is no “right” answer. The Huntington's Disease Society of America recommends that at risk individuals who are considering genetic testing do so at a genetic testing center that follows the HDSA guidelines.
Juvenile Onset Huntington's Disease (JHD) is a form of Huntington's disease (HD) that affects children and teenagers. Huntington's disease is a hereditary neurodegenerative disorder that is characterized by progressively worsening motor, cognitive, behavioral, and psychiatric symptoms.
No, someone with Huntington's Disease (HD) cannot live a "normal" life in the traditional sense because it's a progressive, debilitating genetic disorder affecting movement, thinking, and mental health, but with extensive support, therapy, and management, individuals can live meaningful, independent lives for a significant time, especially in early stages, focusing on quality of life until symptoms worsen, requiring increasing care.
Unawareness often accompanies Huntington disease (HD) and is recognized by clinicians and family members alike. It becomes obvious as premanifest CAG (cytosine adenine guanine) repeat expansion carriers move toward a definitive diagnosis, but unawareness can be seen throughout the disease course.
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.
Familial prion disease may produce a diverse range of phenotypes, even within the same pedigree. It may resemble HD with prominent personality change, psychiatric symptoms and cognitive decline, chorea, rigidity, and dysarthria.
Early symptoms of Huntington's disease include:
It is important to remember that these outbursts of anger are commonly the result of the brain changes in HD, and the person with HD may not understand that you are trying to help them. These brain changes can make it difficult or impossible for someone with HD to view situations from the perspectives of others.
With dominant diseases like Huntington's Disease (HD), it is usually pretty easy to figure out risks. Generally if one parent has it then each child has a 50% chance of having it too. And if neither parent has the disease, then odds are that none of the kids will either. Huntington's is a dominant genetic disease.
Symptoms of Huntington's disease usually start in adults aged between 30 and 50, but it can happen at any age. It affects people who have a parent with the condition. The symptoms develop slowly.
Speech changes are typically mild initially but can get worse over time. Speech can become slurred (if muscles in the face and tongue become weak) or lose its natural rhythm and sound 'jerky' (if you have difficulty coordinating your breathing with speech).
Other people go ahead and have children at risk, because there is a chance the child will not have the expanded gene, or they feel there will be good treatments or even a cure available by the time the child grows up. Others want to have children, but want to reduce the risk of them inheriting Huntington's disease.
In the early stages of Huntington's disease, there may not be any specific changes on the brain scan. A doctor might use a brain scan if they're concerned there may be other problems in addition to Huntington's disease.
Results: As of 2019 there were 47 HDSA COE's in the US, and in the preceding year, they performed HD predictive genetic testing on a total of 777 individuals. The average cost of these tests was $1,157.12, with a range of $275-3,640 (Figure 1).
Disorders that are caused by an abnormal number of repeats include Huntington's disease and Fragile X syndrome. The genotyping platform 23andMe uses is not capable of detecting trinucleotide repeats and therefore 23andMe does not include any reports on trinucleotide repeat disorders.
Intermittent explosive disorder involves repeated, sudden bouts of impulsive, aggressive, violent behavior or angry verbal outbursts. The reactions are too extreme for the situation. Road rage, domestic abuse, throwing or breaking objects, or other temper tantrums may be symptoms of intermittent explosive disorder.
Mental health conditions
The most common mental health condition associated with Huntington's disease is depression. This isn't simply a reaction to receiving a diagnosis of Huntington's disease. Instead, depression appears to occur because of damage to the brain and changes in brain function.
And for social and cultural as well as medical and scientific reasons, it played a far more important role in defining the discrete clinical entity that soon came to be known as 'Huntington's chorea' and by the late 1960s, as 'Huntington's disease'.
The most common signs of Huntington's disease include:
Cognitive changes, including difficulty with focus, memory and decision-making. Slower processing of information. Trouble organizing or completing tasks. Mood swings or irritability.
Common complications include problems with eating and swallowing (dysphagia), particularly as the disease progresses. The loss of muscle control and coordination means that spilling food from the mouth and choking are possible.
Blood tests, specifically genetic testing, can determine the likelihood of developing Huntington's disease. Additional procedures that may help in the neurological workup may include: Computed tomography (CT) scan. Magnetic resonance imaging (MRI) scan.
The 5-2-1 rule in Parkinson's disease is a clinical guideline to identify when the condition may be considered "advanced," suggesting a need for advanced therapies like Deep Brain Stimulation (DBS) or intestinal gel. It's met if a patient experiences at least 5 doses of levodopa daily, plus 2 or more hours of "Off" time (symptoms return), and/or 1 or more hour of troublesome dyskinesia (involuntary movements) daily, signaling inadequate symptom control.
Listed in the directory below are some, for which we have provided a brief overview.