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Living with Familial benign copper deficiency

A rare inherited condition with low copper levels in infants that can improve with copper supplements.

Understanding Familial benign copper deficiency

Familial benign copper deficiency is a rare condition affecting how the body absorbs and moves copper, causing low copper in the blood.

It begins in infancy. It can cause poor growth, mild anemia, repeated seizures, low muscle tone, and oily skin. GARD says symptoms are reversible or improve with copper taken by mouth. GARD notes no further reports since 1988.

Signs & symptoms

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

  • Seizures
  • Low muscle tone (hypotonia)
  • Short stature
  • Poor weight gain (failure to thrive)
  • Mild anemia
  • Acne or oily skin

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.

  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)
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
Which tests measure copper levels?
How are copper supplements given and monitored?
Which specialists should be involved in care?

Quick facts

Symptoms usually startInfant
InheritanceAutosomal Dominant, X-Linked

Changes in genes cause this condition. GARD lists autosomal dominant and X-linked inheritance. It does not name the gene.

GeneticInherited Metabolic

Also known as: familial benign hypocupremia

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Familial benign copper deficiencyGARD ID 1522 · 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 benign copper deficiency.

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