Search the largest database of understandable information on rare disorders. Over 1,100 diseases are included. You may also search on an alphabetical index of disease names. The site offers brief information on the disease and links to other related sites at no charge. However, to see the full summary of information for a particular disorder, there is fee of $7.50. (6/29/04) Also included on the site are an organizational database and a database of orphan drugs.