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Living with Sickle cell-hemoglobin C disease

A type of sickle cell disease that changes red blood cell shape, causing anemia and episodes of severe pain.

Understanding Sickle cell-hemoglobin C disease

Sickle cell-hemoglobin C disease is a type of sickle cell disease that changes the shape of red blood cells so they carry oxygen less well.

Symptoms include anemia and episodes of tiredness and extreme pain (vaso-occlusive crisis). Severity varies from person to person. People with this condition need to take care to avoid infection and have regular checkups to make sure organs are working well. When anemia becomes severe, a blood transfusion may be needed, and a bone marrow transplant may be suggested depending on severity.

Signs & symptoms

GARD doesn't list specific symptoms for this condition yet. Based on its summary, symptoms include:

  • Anemia
  • Tiredness
  • Episodes of extreme pain (vaso-occlusive crisis)

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

  4. Connect with expert centers

    Sickle Cell Disease Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Blood and bone marrow specialists (hematologists); Genetic specialists (geneticists)
Expert care
Expert lists: Sickle Cell Disease Foundation
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 Sickle Cell Disease Association 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
How can I lower my risk of infections?
How often should my organs be checked?
When might a transfusion or transplant be considered?

Quick facts

Symptoms usually startany time in life
InheritanceAutosomal Recessive
GenesHBB

GARD lists changes in the HBB gene, which tells the body how to make hemoglobin. A child inherits a changed copy of the gene from each parent (autosomal recessive).

GeneticBlood

Also known as: double heterozygous for hb s and hb d; hbs-hbc disease; hbsc disease; hemoglobin s-c disease; hemoglobin s/c; hemoglobin s/c disease

Patient organizations

Source: NIH GARD · Sickle cell-hemoglobin C diseaseGARD ID 6584 · 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 Sickle cell-hemoglobin C disease.

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  • Recruiting studies from ClinicalTrials.gov
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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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