Anemia occurs when there are not enough healthy red blood cells (RBCs) in the body. Mild anemia can cause your child to feel very tired or have less energy than normal. Severe anemia can cause many health problems.

These are some common tests that may be used to diagnose blood disorders. Most of the tests are done by taking a blood sample from a vein in the arm or from a finger or heel.

Learn about the 4 different parts of blood--red blood cells, white blood cells, platelets, and plasma.

NF2-related schwannomatosis (NF2-SWN) makes certain nerve cells more likely to develop tumors. The most common location for tumors is along the nerves in the ears (auditory nerves). This can lead to hearing loss and problems with balance.

Know what to expect after arthroscopy on your hip.

Blood in your vomit or stool can be a sign of gastrointestinal (GI) bleeding. GI bleeding can be scary. But the cause may not be serious. Here's a look at the possible causes of GI bleeding, and the types of tests you can expect.

Cryptosporidium infection is an illness that affects your intestines. It's caused by a parasite. Read on for details about symptoms, diagnosis, treatment, and prevention.

E. coli is a common bacteria found in the environment, foods, and intestines of people and animals. Most types of E. coli are harmless. But certain types are harmful and can cause severe illness directly or by making toxins. Read on to learn more.

Salmonella is an illness that affects your intestines. It's caused by Salmonella bacteria. You can be infected from eating or drinking contaminated food or water. Here's what you should know.

During a liver transplant, your diseased liver is taken out and replaced with a healthy donor liver. Here's what you can expect before, during, and after your surgery.