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Living with Familial multiple lipomatosis

A rare inherited condition with many fatty lumps under the skin, mostly on the trunk, arms and legs.

Understanding Familial multiple lipomatosis

Familial multiple lipomatosis (FML) is a rare inherited condition that causes many fatty lumps (lipomas) on the trunk and limbs.

It is diagnosed when multiple lipomas occur in more than one family member, often over several generations. The lumps are usually painless but can be numerous and large, which may affect quality of life. Onset is at a variety of ages.

Signs & symptoms

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

  • Multiple fatty lumps (lipomas)
  • Lipomas under the skin (subcutaneous)
  • Lumps that are usually painless
  • Lumps on the trunk, arms and legs

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 genetic specialists and skin, hair, and nail specialists.

  3. Ask which tests can help

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

Care & treatment

Care team
Genetic specialists (geneticists); Skin, hair, and nail specialists (dermatologists)
Expert care
Ask about multidisciplinary care centers for rare conditions
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 Fat Disorders Research Society 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
Which lumps should be checked or removed?
How are the lumps told apart from other types of growths?
Should my family members be checked for lipomas?

Quick facts

Symptoms usually starta variety of ages
InheritanceAutosomal Dominant

FML appears to be autosomal dominant, which means one changed copy of a gene is enough. The underlying genetic cause is not known yet.

GeneticSkin

Also known as: familial multiple lipomata; fml; lipomatosis, multiple

Patient organizations

Source: NIH GARD · Familial multiple lipomatosisGARD ID 12925 · 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 Familial multiple lipomatosis.

Explore the Familial multiple lipomatosis blog

Explore research for Familial multiple lipomatosis

Explore actively recruiting Familial multiple lipomatosis studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Familial multiple lipomatosis 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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