Autistic enterocolitis is a term first used by British gastroenterologist Dr. Andrew Wakefield to describe a number of symptoms that he believes to be unique to those with Autism, including swelling of lymphoid lining in intestines, inflammation of large intestines, constipation, diarrhea, and pain often associated with food allergies including intolerance to gluten and casein.
Forum about Asperger and abdominal pain.
Extreme food selectivity is well beyond the scope of what parents would call fussy eating - it implies the eating of very small quantities of food and/or only eating from a very limited range of foods.
Mother's blog about her experience with Food related allergies and changing diet.
Muffin Tin Monday