Immune system problem

Overview of Immunodeficiency Disorders - Explore from the Merck Manuals - Medical Consumer Version.

Your immune system is a fascinating, interconnected network. It protects you from millions of harmful bacteria, microbes, viruses, toxins, and parasites, yet most people often don't give it a second thought.

People who have a weak immune system tend to get frequent, severe infections. Techniques and lifestyle changes that may help a person stay healthy include managing stress, getting enough sleep, and practicing proper hygiene. Learn more about how to stay healthy with a weak immune system here.

Complications arise when the immune system does not function properly.

An autoimmune disease is a condition in which your immune system attacks your body. Common autoimmune diseases include type 1 diabetes, rheumatoid arthritis, and inflammatory bowel disease. We'll explain the causes and complications of autoimmune disease and how you can find the right treatment option.

Learn about Primary Immunodeficiency symptoms and causes from experts at Boston Children’s, ranked best Children’s Hospital by US News.

Your immune system is your body’s defense against infections and other harmful invaders. Without it, you would constantly get sick from germs such as bacteria or viruses.Your immune system is made up of special cells, tissues, and organs that work together to protect you.

Your immune system is a complex network of cells, tissues, and organs that work together to defend against germs. It helps your body to recognize these "foreign" invaders. Then its job is to keep them out, or if it can't, to find and destroy them.

A condition that affects the immune system. The immune system is made up of cells, tissues, and organs that help the body fight infections and other diseases.

When your immune system doesn't work the way it should, it is called an immune system disorder.

Immune system disorders cause abnormally low activity or over activity of the immune system. In cases of immune system over activity, the body attacks and damages its own tissues (autoimmune diseases). Immune deficiency diseases decrease the body's ability to fight invaders.