Severe T-cell immunodeficiency

What it means

A primary immune deficiency that is characterized by defects or deficiencies of T-lymphocytes that causes specific susceptibility to intracellular micro-organisms.

Several diseases are classified as severe T cell immunodeficiencies: severe combined immunodeficiency syndrome (SCID), reticular dysgenesis, thymic dysplasia (Nezelof syndrome), combined immunodeficiency disease (CID), and Wiskott-Aldrich syndrome (WAS).

Rare diseases that can present with this2

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category