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In children with food allergies, the immune system mistakes a food as harmful and releases powerful chemicals into the bloodstream. These chemicals cause symptoms that may range from mild to life-threatening or even fatal.

Blood loss can happen if your child has an injury, surgery, or an illness that affects blood cells. Your child may receive a transfusion. Strict measures are taken to make sure that donated blood is safe before it’s given to your child. This sheet helps you understand how a blood transfusion is done.

If you have a heart rhythm problem that causes the heart to beat faster than normal, it is known as tachycardia. There are many types of tachycardia.

When a person has a delusional disorder, they believe things that aren't true. For instance, your loved one may be convinced that others want to harm him or her. Or your loved one might believe that they are ill when that is not true.

Illustrations to show you how to check your blood sugar.

Depending on your cancer and treatment plan, you may be able to keep going to school. Or you may need to take time off for your health.

When your doctor is certain that you no longer need a tracheostomy (trach) tube to help you breathe, they will remove the tube from your neck and windpipe (trachea). This procedure is called decannulation.

A catheter-associated urinary tract infection (CAUTI) is an infection of the urinary system. CAUTI is caused by germs that get into the urinary tract when a urinary catheter is used. This is a tube that's placed into the bladder to drain urine.

Doctors commonly leave this drain within the abdominal cavity after surgery. It helps prevent swelling and reduces the risk for infection. The tube is held in place by a few stitches. It is covered with a bandage. Your doctor will remove the drain when he or she determines you no longer need it.