Myelodysplastic syndrome (MDS) is a condition that affects the bone marrow and the blood cells it produces.
Your bone marrow makes different types of blood cells:
Red blood cells, which carry oxygen in your blood.
White blood cells of different types, which are important elements of your immune system.
Platelets, which help your blood to clot.
Your bone marrow needs to produce the proper number of these cells. And the cells need to have the right shape and function.
In people with...
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.
Hemophilia A can be mild, moderate, or severe, depending on how little you have of factor VIII.
Hemophilia A runs in families. It's usually diagnosed in babies, toddlers, or young children.
Hemophilia A comes from your genes. You can inherit it from your parents. Or it can happen if a certain gene changes before you're born. This change is called a mutation.
There is a rare, dangerous form of hemophilia A that is not inherited. It's called acquired hemophilia A and it can be related to pregnancy, cancer, or the use of certain medications. However, no cause can be found in about half of cases.
The main symptoms you might notice are bleeding more than normal and bruising easily. For instance:
Nosebleeds for no apparent reason
Heavy bleeding from small injuries
Heavy long-term bleeding in the mouth after a tooth is removed
Bleeding from a cut or injury that starts up again after stopping
Blood in urine or stool
If you have bleeding in a muscle or joint, it may be painful to move it. You may have swelling, and the area may feel hot to the touch.
Bleeding can also happen in the brain. If you have a head bump -- even if it's minor -- and you have any of the following symptoms, call your doctor: