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Start here with trusted information about Huntington's disease, clinical trials, research and support organisations. Everything is written in plain English to help patients, families and carers feel informed and confident.

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Understanding Huntington's Disease

Simple, reliable information about the condition and how it affects daily life.

What is Huntington's disease?

Huntington's disease is a rare, inherited condition that affects the brain. It causes changes in movement, thinking, and mood over time. Symptoms usually appear between the ages of 30 and 50, though they can begin earlier or later. There is currently no cure, but research is advancing.

How it is inherited

Huntington's is caused by a change in a single gene. If a parent has the gene, each child has a 50% chance of inheriting it. Genetic testing is available for people who want to know their status, and genetic counsellors can help with this decision.

Common symptoms

Early signs can include small involuntary movements, difficulty concentrating, low mood, or irritability. Over time, movement, speech, and swallowing can become more affected. Every person's experience is different, and symptoms progress at varying speeds.

Disease progression

Huntington's progresses gradually over many years. In the early stage, daily life may change only a little. In the middle stage, support with daily tasks becomes more important. In the later stage, full-time care may be needed. Teams of specialists can help at every stage.

Living with Huntington's disease

Many people live full, meaningful lives for years after diagnosis. Support from family, specialist nurses, therapists, and local organisations makes a real difference. Staying active, connected, and informed can help maintain quality of life.

Understanding Clinical Trials

What research studies involve and what to consider before taking part.

What is a clinical trial?

A clinical trial is a research study that tests new treatments, devices, or care approaches in people. Trials are designed to answer specific questions about safety, effectiveness, or quality of life. Every approved drug or therapy has been through clinical trials first.

Phase I, II and III trials

Phase I trials focus mainly on safety and finding the right dose, often with a small group. Phase II trials look at whether the treatment shows promise in people with the condition. Phase III trials compare the new treatment with existing care in a larger group. Some studies also have an earlier Phase 0 stage.

Who can take part

Every trial has eligibility criteria based on factors like age, diagnosis, stage of disease, and overall health. These rules exist to keep participants safe and to make sure results are reliable. Meeting the criteria does not guarantee you can join — the study team makes the final decision.

What informed consent means

Informed consent is the process of learning all the important details about a trial before deciding to take part. You will receive written information covering possible risks, benefits, time commitments, and your right to leave the study at any time. Signing is voluntary and can be withdrawn later.

What to expect during a study

Each study is different, but most involve regular visits to a clinic or hospital. Visits may include health checks, questionnaires, blood tests, or scans. Some trials also ask participants to keep a diary or use a wearable device. The research team will explain everything before you begin.

Trusted Organisations

Charities and associations offering support, advice, and community for people affected by Huntington's disease.

Huntington's Disease Association (UK)
The leading UK charity supporting people affected by Huntington's disease through specialist advice, local support groups, and advocacy.
Scottish Huntington's Association
Provides dedicated support, specialist nursing, and family services for people living with Huntington's disease across Scotland.
Huntington's Disease Society of America
A major US organisation offering resources, community programmes, and research funding for the Huntington's disease community.
European Huntington Association
A network of national organisations working together to improve care, share knowledge, and represent the European HD community.

Trusted Research Sources

Registries and publications where you can explore studies and read about the latest science.

ClinicalTrials.gov

The world's largest database of privately and publicly funded clinical studies. You can search by condition, location, and study status.

ISRCTN

A registry providing unique study identifiers and summaries for health and social-care research, mainly in the UK and Europe.

Huntington Study Group

A global network of HD researchers and centres conducting large-scale clinical trials and observational studies in Huntington's disease.

HD Buzz

Plain-English summaries of the latest Huntington's disease research written by scientists for the HD community.

NHS — Huntington's disease

Official NHS information covering symptoms, causes, diagnosis, treatment, and living with Huntington's disease in the UK.

Frequently Asked Questions

Common questions about clinical trials and participation.

Disclaimer: Fenix provides information and research discovery tools and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your doctor or other qualified health provider with any questions you may have regarding a medical condition.