Immune System Diseases And Dysfunction

Immune system diseases can be divided into two basic categories. There are dysfunctions or diseases of the immune system in that the body's ability to fight disease is impaired and dysfunctions or diseases of the immune system in which the immune system overreacts to stimuli, causing damage to the other organs or systems of the body.
There are numerous rare congenital or inherited diseases of the immune system and these are frequently known as primary immune deficiency diseases. These immune system diseases have an effect on an estimated fifty,000 people in the United States. A healthy immune system recognizes "invaders" like viruses, bacteria or something that's not a traditional half of the body and destroys these invaders. In cases of severe immune system diseases, the body may have little, if any, traditional immune responses. These diseases of the immune system result in frequent recurring infections. Nezelof's Syndrome, Granulomatous Disease, T-Lymphocyte Deficiency, Chronic Dysphagocytosis, Impotent Neutrophil Syndrome and Congenital Dysphagocytosis are all samples of immune system diseases in which there is a weakened or absent response to everyday bacteria, viruses, fungi, etc.
Acquired Immune Deficiency Syndrome (AIDS) is one in all the immune system diseases that is not inherited or congenital. It's caused by an infection with the human immunodeficiency virus or HIV. HIV invades and inactivates sure cells of the immune system, known as helper T-cells. Helper T-cells are white blood cells that normally stimulate the production of antibodies and killer T-cells, that destroy viruses, bacteria and alternative invaders like cancer cells. As opposed to the opposite rare diseases of the immune system, that might be caused by a missing or inactive spleen or thymus or some other congenital or inherited defect resulting in a lack or absence of any white blood cells, a one that suffers from AIDS had a previously healthy immune system. According to the Center for Disease Control and Prevention (CDC), an estimated 944,305 individuals in the United States have been diagnosed with AIDS.
There are various conditions which are believed to be caused by dysfunction of the immune system and these are typically known as diseases of the immune system or are grouped together with diseases of the immune system for purposes of discussion. Rheumatoid arthritis, for instance is believed to be caused by an "overactive" immune system. Diseases like lupus, juvenile onset diabetes, multiple sclerosis, and psoriasis are all believed to be related to an overactive immune system. Diseases like these are characterized by immune system attacks on healthy traditional cells for unknown reasons. Even allergies are believed to be related to dysfunction of the immune system, since the immune system overreacts to allergens.