In some cases,<unk>  can be further classified according to which kind of lymphocytes are reduced. If all three kinds of lymphocytes are suppressed, then the term is used without further qualification. * In T<unk> , there are too few T lymphocytes, but normal numbers of other lymphocytes. It causes, and manifests as, a T cell deficiency. This is usually caused by HIV infection (resulting in AIDS), but may be Idiopathic CD4+<unk>  (ICL), which is a very rare heterogeneous disorder defined by CD4+ T-cell counts below 300 cells/μL in the absence of any known immune deficiency condition, such as human immunodeficiency virus (HIV) infection or chemotherapy. * In B<unk> , there are too few B lymphocytes, but possibly normal numbers of other lymphocytes. It causes, and manifests as, a humoral immune deficiency. This is usually caused by medications that suppress the immune system. * In NK<unk> , there are too few natural killer cells, but normal numbers of other lymphocytes. This is very rare.
Lymphocytopenia
Monocytopenia
Thrombocytopenia
Lymphocytosis
Cytopenia
Monocytosis
Neutropenia
Reticulocytopenia