Skip to content

Information and Resources

Types of Blood Disorders

 Blood disorders can affect any of the three main components of blood:

  • Red blood cells, which carry oxygen to the body's tissues
  • White blood cells, which fight infections
  • Platelets, which help blood to clot

Blood disorders can also affect the liquid portion of blood, called plasma.

Recommended Related to

Hemophilia A

When you have hemophilia, your blood doesn't clot normally. That means your body has problems stopping bleeding, both outside and inside your body. The good news is that it can be treated, and in some cases you can give yourself the treatment at home. You can lead a full life when you have the right treatment plan in place. There are different types of hemophilia. With hemophilia A, your body doesn’t have enough of a protein called factor VIII, which your body needs to make clots and stop bleeding...

Read the Hemophilia A article > >

Treatments and prognosis for blood diseases vary, depending on the blood condition and its severity.

Blood Disorders Affecting Red Blood Cells

Blood disorders that affect red blood cells include:

Anemia: People with anemia have a low number of red blood cells. Mild anemia often causes no symptoms. More severe anemia can cause fatigue, pale skin, and shortness of breath with exertion.

Iron-deficiency anemia: Iron is necessary for the body to make red blood cells. Low iron intake and loss of blood due to menstruation are the most common causes of iron-deficiency anemia. Treatment includes iron pills, or rarely, blood transfusion.

Anemia of chronic disease: People with chronic kidney disease or other chronic diseases tend to develop anemia. Anemia of chronic disease does not usually require treatment. Injections of a synthetic hormone (Epogen, Procrit) to stimulate the production of blood cells or blood transfusions may be necessary in some people with this form of anemia.

Pernicious anemia (B12 deficiency): An autoimmune condition that prevents the body from absorbing enough B12 in the diet. Besides anemia, nerve damage (neuropathy) can eventually result. High doses of B12 prevent long-term problems.

Aplastic anemia: In people with aplastic anemia, the bone marrow does not produce enough blood cells, including red blood cells. A viral infection, drug side effect, or an autoimmune condition can cause aplastic anemia. Medications, blood transfusions, and even a bone marrow transplant, may be required to treat aplastic anemia.

Autoimmune hemolytic anemia: In people with this condition, an overactive immune system destroys the body's own red blood cells, causing anemia. Medicines that suppress the immune system, such as prednisone, may be required to stop the process.

Thalassemia: This is a genetic form of anemia that mostly affects people of Mediterranean heritage. Most people have no symptoms and require no treatment. Others may need regular blood transfusions to relieve anemia symptoms.

Sickle cell anemia: A genetic condition that affects mostly African-Americans. Periodically, red blood cells change shape, and block blood flow. Severe pain and organ damage can occur.

Polycythemia vera: The body produces too many blood cells, from an unknown cause. The excess red blood cells usually create no problems but may cause blood clots in some people.

Malaria: A mosquito's bite transmits a parasite into a person's blood, where it infects red blood cells. Periodically, the red blood cells rupture, causing fever, chills, and organ damage. This blood infection is most common in Africa; those traveling to Africa are at risk and should take preventive measures. Malaria was eradicated from the U.S. in the 1940s.

Hot Topics

WebMD Video: Now Playing

Click here to wach video: Dirty Truth About Hand Washing

Which sex is the worst about washing up? Why is it so important? We’ve got the dirty truth on how and when to wash your hands.

Click here to watch video: Dirty Truth About Hand Washing

Popular Slideshows & Tools on WebMD

MS Overview
Recognizing symptoms.
feet
Solutions for 19 types.
Still Life Of Protein Foods
Do they work?
build a better butt
How to build a better butt.
lone star tick
How to identify that bite.
woman standing behind curtains
How it affects you.
brain scan with soda
Tips to kick the habit.
row of colored highlighter pens
Tips for living better.
stressed working woman
And how to fix them?
fat caliper
Check your BMI.
woman dreaming
What Do Your Dreams Say About You?
man with indigestion
How to keep yours at bay.

Pollen counts, treatment tips, and more.

It's nothing to sneeze at.

Loading ...

Sending your email...

This feature is temporarily unavailable. Please try again later.

Thanks!

Now check your email account on your mobile phone to download your new app.

Women's Health Newsletter

Find out what women really need.