I am not sure whether or not the diet would cause this, but if I were to guess I would say no. However I really dont have a clue. Eeek an abscess that never feels good. I just had a foot of my ileum taken out with some other goods and although it is a painful surgery it is worth it if you are having a lot of flare ups and have no more medication benefits. Not to be decided lightly, but when you have used all of your options it is a good option. Hmmm...maybe they will talk about some medication therapy like remicade for an abscess but I am not too sure. If you are in the hospital just concentrate on getting better, and dont worry too much about the cause of the abscess rather than just getting it all healed up right now. I am sorry that I dont have much advice, but I wish you the best of luck and hope that you feel better soon!
Diagnosed: 2003, age 18 (had issues with it since I was 12)
Meds for crohns: Prednisone, Oxycodone, Oxycontin, Remicade,
Other medical issues: Hereditary Spherocytosis (hemolytic anemia) iron deficient anemia, polyarthralgia, ovarian cysts, Migraines
Surgeries: Spleen, Gallbladder, Tonsils, Adenoids, foot of terminal Ileum, Appendix, Ileocecal valve, bit of colon