Feline Gastroinstestinal Eosinophilic Sclerosing Fibroplasia (FGESF) is considered to be a type of uncontrolled inflammation that affects the gastrointestinal (GI) tract. This disease was discovered and classified fairly recently (first mentions appear to be in 2007). Because this is such a young disease there is still relatively little known about it, and there is a strong possibility that cats exhibiting GI symptoms are misdiagnosed with other conditions when they really have FGESF.
Disease Information Sites
https://www.fgesf.org is a comprehensive site with information about FEGESF
There is also some information about it on the IBD Kitties site. Much of the information, and the story about Remy were provided by Remy’s owner, who also later created the https://www.fgesf.org/ site above.
Support Groups
There is a Facebook group that is currently active and is dedicated to FGESF.
Feline Disease Management 