Huntington’s disease symptoms

Last updated Aug. 14, 2025, by Marisa Wexler, MS
Fact-checked by Marta Figueiredo, PhD

Huntington’s disease is a progressive brain disorder that causes a wide range of neurological symptoms, including movement issues, cognitive difficulties, and behavioral changes.

Although no therapy developed to date can slow or stop disease progression, there are many forms of Huntington’s disease treatment that can help to manage certain symptoms. As such, promptly identifying Huntington’s symptoms is important to facilitate disease diagnosis, optimal management, and planning for the future.

Early signs of Huntington’s disease

The mutation that causes Huntington’s disease is present from the moment a person is conceived, but symptoms typically appear at a mean age of 35 to 44. Symptoms of Huntington’s disease tend to start subtly and then gradually get worse over time.

Early symptoms of Huntington’s disease, which may manifest differently from person to person, typically don’t prevent people from performing daily activities independently. Early signs of Huntington’s disease may include:

clumsiness or unsteadiness while walking
mild chorea, or uncontrollable muscle movements, that can affect the arms, legs, or face
changes in mood, such as irritability, anxiety, depression, or apathy
difficulty concentrating or thinking through complicated problems
abnormal eye movements
a reduced sense of smell

Main symptoms of Huntington’s disease

Signs and symptoms of Huntington’s disease can affect movement, cognitive function, mental health, and behavior.

Symptoms affecting movement

Huntington’s motor symptoms may include:

chorea
trouble with balance and walking
loss of coordination
smaller movements (hypokinesia)
unusually slow movements (bradykinesia)
rigidity
abnormal movements or postures due to excessive muscle contraction (dystonia)
problems with eye movements
speech problems
difficulty swallowing

Cognitive symptoms

Cognitive symptoms of Huntington’s may include:

problems in organizing, planning, or making decisions
difficulties with multitasking and complex problem solving
memory impairments
difficulty learning to do things in a new or different way
slow thinking and reaction times

In the later stages of Huntington’s, patients usually develop dementia, where cognitive problems are severe enough to cause impairments in daily functioning.

Psychiatric and behavioral symptoms

Huntington’s can cause a variety of psychiatric problems and behavior changes, including:

mood swings
anxiety
depression
apathy
personality changes
an inability to recognize one’s own symptoms
sleep disorders
irritability
aggression
impulsivity
loss of inhibitions
psychosis (hallucinations and/or delusions)

Less common symptoms of Huntington’s disease

In addition to the common motor, cognitive, and behavioral manifestations, Huntington’s disease can sometimes cause other symptoms, including:

weight loss
sleep disturbances
sexual dysfunction
abnormal heart rhythms
digestive complaints such as constipation
urinary urgency or incontinence
pain

Juvenile Huntington’s disease symptoms

Juvenile Huntington’s disease (JHD) is a rare form of the disorder in which symptoms manifest before age 20.

The symptoms of JHD are, to some extent, similar to those of adult-onset Huntington’s, as they include movement problems, issues with cognitive function, and behavioral changes. However, JHD shows some notable differences relative to adult-onset Huntington’s, such as:

higher rates of rigidity
lower rates of chorea
seizures
difficulty learning or regulating behavior in school
faster disease progression

Seizures, which affect as many as half of children with JHD, generally do not occur in adult-onset Huntington’s. Difficulty learning or regulating behavior in school is a frequent first sign of the disease.

How symptoms progress over time

Huntington’s is a progressive disorder, and there are several stages of the disease, defined based on the severity of symptoms and how they impact a person’s ability to perform daily activities and live independently.

In the early stages of Huntington’s, occurring typically around the third or fourth decade of life, patients are generally able to do most activities of daily living without assistance. Huntington’s disease early warning signs may include:

unexplained changes in mood or cognitive function
unusual clumsiness or mild movement disorders

The time to progress from early- to middle-stage Huntington’s can range from a few years to more than a decade. In Huntington’s middle stages, symptoms become more bothersome, and patients will increasingly require help to manage day-to-day activities. Signs of middle-stage Huntington’s commonly include:

more pronounced chorea
worse coordination and balance problems
trouble speaking and/or swallowing
more serious cognitive problems and more severe behavioral abnormalities.

Worse coordination and balancing problems can result in a higher risk of falls.

Late-stage Huntington’s can develop anywhere from nine to 26 years after disease onset. At this point in the disease’s progression, patients will have substantial disability and will require assistance with many daily tasks. In late-stage Huntington’s, chorea tends to ease, though other motor symptoms like slowed movement or abnormal postures tend to worsen.

Among other signs and symptoms:

patients may be unable to walk or speak
swallowing is often difficult and there is a risk of choking
cognitive impairments get worse
psychiatric and behavioral issues are more frequent

Huntington’s Disease News is strictly a news and information website about the disease. It does not provide medical advice, diagnosis or treatment. This content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.