transient hypogammaglobulinemia of infancy


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hypogammaglobulinemia

 [hi″po-gam″ah-glob″u-lin-e´me-ah]
abnormally low levels of all classes of immunoglobulins, associated with heightened susceptibility to infectious diseases; see also agammaglobulinemia, dysglobulinemia, and immunodeficiency.
common variable hypogammaglobulinemia common variable immunodeficiency.
physiologic hypogammaglobulinemia a normal period of hypogammaglobulinemia seen in all infants at about 5–6 months of age as the level of transplacentally acquired maternal immunoglobulins declines before endogenous immunoglobulin synthesis rises to normal levels.
transient hypogammaglobulinemia of infancy prolongation of the normal physiologic hypogammaglobulinemia of infancy caused by delayed development of endogenous immunoglobulin production and associated with increased susceptibility to infections.
X-linked hypogammaglobulinemia X-linked agammaglobulinemia.

tran·sient hy·po·gam·ma·glob·u·lin·e·mi·a of in·fan·cy

a type of primary immunodeficiency that occurs in infants of both sexes, usually before the sixth month of life, probably resulting from immaturity of lymphoid tissue.

transient hypogammaglobulinemia of infancy

Pediatrics A prolongation or accentuation of the normal physiologic decline in serum Igs that normally occurs in the first 3-7 months of life; in THOI, Ig levels may not normalize for 2-3 yrs; antibody production is normal

tran·si·ent hy·po·gam·ma·glob·u·li·ne·mi·a of in·fan·cy

(tran'sē-ĕnt hī'pō-gam'ă-glob'yū-li-nē'mē-ă in'făn-sē)
A type of primary immunodeficiency that occurs in infants, probably resulting from immaturity of lymphoid tissue.
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