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Living with Sezary syndrome

A blood cancer, a type of skin lymphoma, that causes a red, very itchy rash and swollen lymph nodes in adults.

Understanding Sezary syndrome

Sezary syndrome is an aggressive form of cutaneous T-cell lymphoma, a blood cancer that affects the skin.

In this cancer, T cells (a type of white blood cell) become cancerous. These Sezary cells are found in the blood, skin and lymph nodes. People develop a red, severely itchy rash over large parts of the body and have swollen lymph nodes. It most often occurs in adults over age 60. The cancer can spread to organs such as the liver, spleen and bone marrow, and people have a higher risk of another cancer.

Signs & symptoms

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

  • Red, severely itchy skin rash (erythroderma)
  • Swollen lymph nodes
  • Hair loss
  • Thick skin on palms and soles
  • Nail changes
  • Lower eyelids that turn outward

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, cancer 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.

  4. Connect with expert centers

    Cutaneous Lymphoma Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Blood and bone marrow specialists (hematologists); Cancer specialists (oncologists); Skin, hair, and nail specialists (dermatologists)
Expert care
Expert lists: Cutaneous Lymphoma 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 Cutaneous Lymphoma Foundation 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
What tests will tell us how far the disease has spread?
Which specialists should be on my care team?
How can the itching and skin symptoms be eased?

Quick facts

Symptoms usually startAdult

GARD doesn't describe a cause for this condition yet. It explains that the skin problems happen when cancerous T cells move from the blood into the skin.

SkinBlood

Also known as: ctcl / sezary syndrome; cutaneous t-cell lymphoma/sezary syndrome; sezary disease; sezary lymphoma; sezary syndrome, somatic; sezary's disease

Patient organizations

Source: NIH GARD · Sezary syndromeGARD ID 7629 · 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 Sezary syndrome.

Explore the Sezary syndrome blog

Explore research for Sezary syndrome

Explore actively recruiting Sezary syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Sezary syndrome 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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