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Living with L-ferritin deficiency

A rare genetic blood condition with low L-ferritin and sometimes seizures, restless legs, or hair loss, though some people have no symptoms.

Understanding L-ferritin deficiency

L-ferritin deficiency is a rare genetic condition with low or undetectable L-ferritin in the blood and otherwise normal lab tests.

Some people have generalized seizures, an atypical form of restless legs syndrome, mild changes in thinking, and progressive hair loss. Others have no symptoms. It is noticed in childhood.

Signs & symptoms

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

  • Seizures
  • Restless legs
  • Hair loss (alopecia)
  • Mild changes in thinking
  • No symptoms in some people

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 blood and bone marrow specialists and genetic specialists.

  3. Consider genetic testing

    Changes in FTL are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

Care & treatment

Care team
Blood and bone marrow specialists (hematologists); Genetic specialists (geneticists)
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 rare disease patient organizations for support
  • 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
Can genetic testing for the FTL gene confirm the diagnosis?
Do I need seizure or restless legs treatment?
How is L-ferritin measured, and does it need regular checks?

Quick facts

Symptoms usually startChild
InheritanceAutosomal Dominant, Autosomal Recessive
GenesFTL

Changes in the FTL gene cause this condition. GARD lists autosomal dominant and autosomal recessive inheritance.

GeneticBloodInherited Metabolic

Also known as: l-ferritin deficiency, autosomal dominant; l-ferritin deficiency, dominant and recessive; lftd; lftd - l-ferritin deficiency

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · L-ferritin deficiencyGARD ID 17748 · 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 L-ferritin deficiency.

Explore the L-ferritin deficiency blog

Explore research for L-ferritin deficiency

Explore actively recruiting L-ferritin deficiency studies with HealthSpark.

HealthSpark

Find actively recruiting studies for L-ferritin deficiency 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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