First described in 1882, cyclic vomiting syndrome (CVS) is a rare idiopathic disorder characterized by recurring periods of vomiting in an otherwise normal child.
The first is known as primary hypersomnia (sometimes called idiopathic hypersomnia), which means that symptoms can last for months or even years at a time.
Children with idiopathic scoliosis appear to be otherwise entirely healthy and have not had any bone or joint disease early in life.
Weomstoem. Stuart, et al. "Health and Function of Patients with Untreated Idiopathic Scoliosis: a 50-Year Natural History Study."
While idiopathic scoliosis tends to run in families, no specific genes responsible for the condition have been identified.
The word idiopathic means that the cause of the disease is unknown and that it appears to begin spontaneously.
The idiopathic form most commonly occurs in children and is most likely the result of production of antibodies that cause destruction of platelets in the spleen and to a lesser extent the liver.
Idiopathic thrombocytopenic purpura (ITP) is a bleeding disorder caused by an abnormally low level of blood platelets, small disc-shaped cells essential to blood clotting (coagulation).
ITP is as of 2004 often called immune thrombocytopenic purpura rather than idiopathic because studies in the early 2000s have shown the presence of autoimmune antibodies in the blood.
People who have idiopathic type 1 diabetes also experience beta cell destruction, but it is due to a chromosomal abnormality or an unknown cause rather than any autoimmune process.