HIV infects T cells, specifically a type of T cell called CD4+ T cells. Human immunodeficiency virus (HIV) is the most well-known example of a chronic immune system condition caused by an infection. Medications like chemotherapies for cancer or immune suppressive medications for a variety of rheumatologic or allergic disorders. Symptoms can include recurrent fevers, swelling or joint pain. A group of periodic fever syndromes, which result from deficiencies in the pathway that controls inflammation, or swelling.Kostmann disease, also known as severe congenital neutropenia, which results in chronically low levels of the white blood cells known as neutrophils.
The result can be excessive swelling, and in some cases, the swelling can occur around the breathing tubes leading to suffocation.
This can result from immune deficiencies present at birth medications that suppress the immune system, like steroids unnecessary or overzealous immune responses, such as allergies or immune responses to one’s self, called autoimmunity. Sometimes a person’s immune system does not work properly.