Psych Central is a site for mental health diseases and has a page called Find Help where you can ask a question or be directed to a therapist if you live in the USA.
Hope for undiagnosed Americans: The National Institutes of Health (NIH) announced a research program in 2008 that aims to provide answers to patients with mysterious conditions that have long eluded diagnosis. Called the Undiagnosed Diseases Program, referrals are to the NIH Clinical Center in Bethesda, Md.
On July 2, 2012, the National Institutes of Health (NIH) Common Fund announced that it will provide $145 million over seven years toexpand the NIH Undiagnosed Diseases Program through a network of medical research centers around the country.
Undiagnosed Up Until Now: A Journey of Self Discovery Through Depression, Scotopic Sensitivity Irlen Syndrome, and Chronic Fatigue Syndrome. By Rod Groenhuizen Publisher: Groenhuizen Family Trust 2006
The Feeling's Unmutual: Growing Up with Asperger's Syndrome Undiagnosed. By Will Hadcroft