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Living with Anemia, nonspherocytic hemolytic, due to G6PD deficiency

A genetic condition in which red blood cells break down early, often after infections, certain drugs, or fava beans.

Understanding Anemia, nonspherocytic hemolytic, due to G6PD deficiency

Anemia, nonspherocytic hemolytic, due to G6PD deficiency is a genetic disorder in which red blood cells break down too early.

A defect in an enzyme called glucose-6-phosphate dehydrogenase causes red blood cells to break down early, which is called hemolysis. The most common problem is hemolytic anemia, when cells are destroyed faster than the body can replace them. It is most often triggered by infections or certain drugs, such as some antibiotics and malaria medicines. It can also follow eating fava beans or breathing in fava plant pollen (favism).

Signs & symptoms

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

  • Pale skin
  • Yellowing of the skin and eyes (jaundice)
  • Dark urine
  • Tiredness and shortness of breath
  • Fast heart rate
  • Belly pain and fever

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 G6PD 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 g6pd Deficiency Foundation
  • 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 medicines and foods should I avoid?
Is genetic testing for G6PD available for our family?
What should I do if I notice dark urine or jaundice?

Quick facts

Symptoms usually startNewborn
InheritanceX-Linked
GenesG6PD

Changes in the G6PD gene cause this condition, and it is inherited in an X-linked way.

GeneticBlood

Also known as: anemia, congenital, nonspherocytic hemolytic, 1; anemia, congenital, nonspherocytic hemolytic, 1, g6pd deficient; class i g6pd deficiency; class i glucose-6-phosphate dehydrogenase deficiency; cnsha1; favism, susceptibility to

Patient organizations

Source: NIH GARD · Anemia, nonspherocytic hemolytic, due to G6PD deficiencyGARD ID 6520 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

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