Emotional, spiritual and educational support for persons with either rare or undiagnosed illnesses and their families.

Provides information and mutual support to those who have an undiagnosed illness.

In many cases, people who are arrested suffer from drug problems or may even have undiagnosed mental illnesses.

The report notes that 30,000 Americans a year commit suicide, many with undiagnosed or untreated mental illnesses.

Dr. Brown said the discovery did not suggest that many humans were suffering from undiagnosed illness.

The person may have an undiagnosed illness or infection that is causing the symptoms.

He was hospitalized about a week ago with an undiagnosed illness.

In 1994, Congress passed a law allowing gulf war veterans with "undiagnosed illness" to receive medical and disability benefits.

As a child, he missed three years of elementary school due to an undiagnosed illness.

While in Paris she took ill and died on 3 July 1778 of an undiagnosed illness.