Types of Scleroderma Overview in Sclero Forums (MAIN) Posted August 24, 2011 Types of Scleroderma Overview Types of scleroderma explained, major categories of Systemic Sclerosis, Diffuse, Limited/CREST, and Overlap, as well as Localized including morphea and linear. Presented by Isabella Ensz for the International Scleroderma Network. 08/10/11. These items were posted in the ISN Newsroom. Check the Newsroom every day for the latest scleroderma medical and support information.