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Nutrition Facts: Glossary and Definitions

Cholesterol is listed under the fat information on a nutrition label. This shows the percentage of a certain nutrient in a food, based on a 2,000-c...

What are Lymph Nodes?

When there’s a problem in your body, like an illness or an infection, your lymph nodes can swell. (This usually happens only in one area at a time....

Light Therapy for Your Skin

If the medicine you put on your skin isn't doing all that it needs to, your doctor may suggest adding phototherapy to your psoriasis treatment. You...

What is a Lactic Acid Blood Test?

It’s a test that measures the amount of lactic acid (also called “lactate”) in your blood. This acid is made in muscle cells and red blood cells. O...

Kidney Infection (Pyelonephritis)

A kidney infection, also called pyelonephritis, is when bacteria or viruses cause problems in one or both of your kidneys. Call your doctor if you ...

What is Ischemia?

But it can lead to life-threatening problems like a heart attack or stroke. You can also get ischemia because of a blood clot. A piece of a clot ca...

Inherited Metabolic Disorders

Inherited metabolic disorders are genetic conditions that result in metabolism problems. Most people with inherited metabolic disorders inherit two...

Intravenous Immunoglobulin Therapy (IVIg)

IVIg helps stop the white blood cells of people with lupus from destroying their red blood cells. In people with myositis, the treatment may block ...

What is An Immunoglobulin Test?

This test checks the amount of certain antibodies called immunoglobulins in your body. Your doctor can test for IgG to figure out whether you've be...

What are Immune Deficiency Disorders?

HIV infects and destroys immune system cells that normally fight infections.

Hypopituitarism

In hypopituitarism, one or more of these pituitary hormones is missing. The lack of hormone results in a loss of function of the gland or organ tha...

What is Hyperkalemia?

If you have hyperkalemia, you have too much potassium in your blood. Foods such as melons, orange juice, and bananas are rich in potassium, too. Th...