label: Idiopathic CD4-Positive T-Lymphocytopenia
label_lc: idiopathic cd4-positive t-lymphocytopenia
description: A rare immunodeficiency syndrome characterized by the decrease of the CD4-positive lymphocytes below 300 per cubic millimeter in the absence of identifiable immunodeficiency causes. Patients with this syndrome are at an increased risk of opportunistic infections.