Evans Syndrome: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 23, 2026.
What kind of doctor treats Evans Syndrome?
A hematologist, a doctor who treats blood diseases, usually treats Evans syndrome. Care may also involve an immunologist (an immune system doctor) or a rheumatologist (a doctor who treats autoimmune diseases). A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What is Evans syndrome?
Evans syndrome is a rare disorder in which the immune system destroys certain blood cells. The immune system is the body's defense against germs. In this condition, it makes antibodies, which are proteins that mistakenly attack the body's own blood cells.
The cells under attack are red blood cells, platelets, and sometimes white blood cells called neutrophils. The result is low blood cell counts.
Two problems are the most common. One is autoimmune hemolytic anemia (AIHA), where red blood cells are destroyed too early. The other is immune thrombocytopenia (ITP), where the immune system destroys platelets. Traditionally, Evans syndrome means having both. They can happen at the same time, but more often they happen one after another.
Symptoms
Symptoms vary widely from person to person.
Low red blood cells (anemia) may cause:
- Fatigue, which means feeling very tired.
- Pale skin.
- Lightheadedness.
- Shortness of breath.
- Dark-colored urine.
- A rapid heartbeat.
- Yellowing of the skin, and especially the whites of the eyes (jaundice).
Low platelets (thrombocytopenia) may cause tiny red or purple spots on the skin and larger bruises. People bruise easily after a minor injury. Bleeding from the nose or gums can happen with no clear cause.
Low neutrophils (neutropenia) are less common. They may cause more infections. The lymph nodes, spleen, and liver can also become enlarged.
Most people have long-lasting disease with flare-ups and better periods.
Causes and who gets it
The exact cause of Evans syndrome is unknown. It is an autoimmune disorder, which means the immune system attacks the body's own healthy cells. Researchers believe an infection or another disorder may trigger the immune system to make these antibodies.
There are two types. Primary Evans syndrome is not linked to another disorder. It makes up about 70% of adult cases. Secondary Evans syndrome occurs along with another condition, such as lupus, antiphospholipid syndrome, or Sjogren's syndrome.
How doctors diagnose it
No single test confirms Evans syndrome. Doctors make the diagnosis after ruling out other causes. They may diagnose it when two of three autoimmune cytopenias occur in one person, even at different times.
Tests can include:
- A complete blood count (CBC), a blood test that counts red cells, white cells, and platelets.
- A direct antiglobulin test, a blood test that checks for certain antibodies.
- A bone marrow biopsy and CT scans (detailed x-ray pictures), to help rule out other conditions.
Treatment
There is no cure for Evans syndrome, and treatment is often hard. Treatment is aimed at the symptoms each person has. It may need a team of specialists. Treatment mostly relies on corticosteroids, rituximab, splenectomy, and supportive care.
- Corticosteroids, such as prednisolone, are often the first treatment. They calm the immune system. Many people also need a second treatment.
- Rituximab, a lab-made antibody medicine, appears to work well when steroids do not help. A drawback is low antibody levels, which can leave people open to infections. This is likely when ALPS or CVID, two immune disorders, is the cause.
- IVIg is a solution of donor antibodies given into a vein. It has been used when steroids do not work.
- Splenectomy is surgery to remove the spleen. It is saved for people who do not respond to other treatments. Doctors put it off as long as possible. It is avoided in secondary Evans syndrome because of the risk of infections and blood clots in the veins.
When to see a doctor
See a doctor if you or your child has easy bruising, tiny red or purple skin spots, or nose or gum bleeding. Also see a doctor for pale skin, unusual tiredness, shortness of breath, yellow skin or eyes, or infections that keep coming back. Evans syndrome can sometimes lead to serious or life-threatening complications, including severe anemia, infections, and bleeding.
Call 911 or go to the emergency room if there is bleeding that will not stop. Do the same for chest pain lasting two minutes or more, fainting, sudden confusion, or severe trouble breathing.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. A direct primary care doctor can order first blood tests, such as a complete blood count. This doctor can also refer you to a blood specialist. After diagnosis, this doctor can help coordinate your specialists and watch for changes between visits.
Common questions
Can Evans syndrome be cured?
No, there is no cure for Evans syndrome, but treatment can help. Some people have long remissions, meaning the disease quiets down, while others have ongoing problems.
Is Evans syndrome an autoimmune disease?
Yes, Evans syndrome is an autoimmune disorder. The immune system makes antibodies that attack the body's own red blood cells, platelets, and sometimes white blood cells.
What is the difference between primary and secondary Evans syndrome?
Primary Evans syndrome is not linked to another disorder. Secondary Evans syndrome occurs along with another condition such as lupus. Telling them apart matters because it can affect treatment decisions.
Can Evans syndrome come back after treatment?
Yes, it can. Many people have flare-ups and better periods, and the disease may follow a relapsing course, which means it returns.
Sources
- NORD (National Organization for Rare Disorders) - Evans Syndrome
- National Library of Medicine (PubMed Central) - Evans' Syndrome: From Diagnosis to Treatment
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
