Severe Combined Immunodeficiency Syndrome (SCID)
Signs and symptoms | Treating SCID | Caring for a child with SCID | Bone marrow stem cell malfunction | Thymus gland malfunction | T-lymphosite malfunction | To Learn More | Ways to Help | Works cited








AP Biology: December 2001
Raichel Cohen

Severe Combined Immunodeficiency Syndrome (SCID, pronounced "skid") is one of many primary immune deficiencies. It is an inherited disorder usually due to an error in fetal development. The onset of SCID occurs before the age of 6 months. Prior to this time, an infant functions using the immune sytem of its mother. When the baby reaches a point of complete independance, SCID can be detected.

SCID is invariably fatal without intervention. Many doctors are now dedicating their time to insure early detection of SCID.

There are three main causes of SCID:

T-lymphosite malfunction

Thymus gland malfunction

Bone marrow stem cell malfunction

Some types of SCID are known as enzyme deficiencies. These result in a buildup of poisons in the lymphocytes.

There are four known tyes of SCID. The first, known sometimes as the "Bubble Boy disease," is X-linked. The second is X-linked, as well, though not as severe. The third, charecterized by the absence of a specific protein kinase, is autosomal recessive. The rarest form is "sporadic type" and is constituted by SCID with leukopenia.

Signs and symptoms

Treating SCID

Caring for a child with SCID

If you think your child may have SCID, call your pediatrician immediately. Treatment is nearly always effective, however, if it goes untreated, SCID is fatal.

If your child has SCID, see your doctor regarding ANY illness.

A door; Actual size=180 pixels wide

This is a lymphocyte, the white blood cell used by the immune system to fight off infection.

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