label: Hypogammaglobulinemia
label_lc: hypogammaglobulinemia
description: "A decreased level of serum immunoglobulins. It may be inherited or acquired. It is caused by decreased or inefficient production of immunoglobulins from B cells or by a decrease in the numbers of B cells themselves. Low levels of immunoglobulins will affect the immune system's ability to combat bacterial infection. Supplementation of immunoglobulins is needed to prevent worsening outcomes."