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Living with Early-onset autosomal dominant Alzheimer disease

A form of Alzheimer disease that runs in families and begins before age 65, causing memory and thinking changes.

Understanding Early-onset autosomal dominant Alzheimer disease

Early-onset autosomal dominant Alzheimer disease is a form of Alzheimer disease that starts before age 65 and runs in families.

It is diagnosed in families with more than one member with Alzheimer disease, usually in multiple generations, where symptoms start before age 60, often between ages 30 and 60. Alzheimer disease is a brain disease that causes gradual loss of memory, judgment, and the ability to function socially.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Memory problems
  • Confusion
  • Trouble with language
  • Changes in social behavior
  • Agitation
  • Hallucinations

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include brain and nervous system specialists and genetic specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

  4. Connect with expert centers

    Alzheimer's Foundation of America may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Genetic specialists (geneticists)
Expert care
Expert lists: Alzheimer's Foundation of America
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Alzheimer's Foundation of America and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Would genetic testing for APP, PSEN1, or PSEN2 be right for me or my family?
What does genetic counseling involve before testing?
What support and clinical trials are available?

Quick facts

Symptoms usually startAdult
InheritanceAutosomal Dominant

GARD says changes in the APP, PSEN1, or PSEN2 genes cause these forms. It is autosomal dominant, meaning one changed copy of the gene can cause it.

GeneticNeurological

Also known as: early-onset familial alzheimer disease; early-onset familial autosomal dominant alzheimer disease; eofad; familial alzheimer disease

Patient organizations

Source: NIH GARD · Early-onset autosomal dominant Alzheimer diseaseGARD ID 12798 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Early-onset autosomal dominant Alzheimer disease.

Explore the Early-onset autosomal dominant Alzheimer disease blog

Explore research for Early-onset autosomal dominant Alzheimer disease

Explore actively recruiting Early-onset autosomal dominant Alzheimer disease studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Early-onset autosomal dominant Alzheimer disease with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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