Heart, Blood and Circulation

A-Z Guide

Anemia (Low hemoglobin)
Anemia occurs when the production of red blood cells is insufficient, when too many red blood cells are destroyed, or... »
Congenital Heart Disease
There are many types of congenital heart disease. They can be very mild, or they can be quite serious. Some require... »
Congenital Hypothyroidism
Congenital hypothyroidism occurs around the world, but is fairly uncommon. It is twice as common in girls as in boys.... »
Diphtheria
Diphtheria is a bacterial illness that has been known to plague children since the 4th century B.C. The bacteria can... »
Hemophilia
Hemophilia A (factor VIII deficiency) and hemophilia B (factor IX deficiency) are both hereditary bleeding disorders... »
Nosebleeds
Blood can flow from the nose for many reasons, most of which are not serious. Moreover, the amount of blood lost from... »
Rheumatic Fever
Rheumatic fever is a serious inflammatory disease that can follow untreated or inadequately treated streptococcal... »
Sickle Cell Anemia
Sickle cell disease is caused by a genetic variation of hemoglobin, the molecule that carries oxygen in the red blood... »

Q&A

Blood Types 102: The Role of A, B, O, and AB Groups In Determining Paternity
To do this you need a blood sample from both the mother and the potential father (testing without the mother's blood is... »
Functional Heart Murmurs
When the turbulence of blood flowing through the heart can be heard, the person is said to have a murmur (like the... »