any condition in which the immune system functions in a abnormal or incomplete manner; such conditions are more frequent in the young, the elderly, and individuals undergoing extensive drug or radiation therapy
A term that means the immune system is not working properly, possibly as the result of disease or a genetic condition, or a side-effect of drugs (medicines). Some chemotherapy and radiotherapy treatments can have a negative effect on the immune system.
a condition (caused, for example, by the administration of immunosuppressive drugs or irradiation, malnutrition, aging, or a condition such as cancer or HIV disease) in which an individual's immune system is unable to respond adequately to a foreign substance.
An animal whose immune system is not functioning normally and that may be incapable of mounting an antibody or cell-mediated immune response, is immunocompromised. Some genetic models are immune deficient (immunocompromised). Anti-rejection drugs also result in compromise of the immune system.
Someone who is unable to produce an adequate immune response to invasion by various pathogens, due to age, sickness, exhaustion or a regimen of drugs, any of which may render the body's immune system less than effective.