The short answer is, as everyone else has said, no. It's more a physical disorder that causes irritation in the bowels.

However, I have spoken with people who developed an eating disorder in relation to IBS. But receiving proper treatment helped them recover from the eating disorder. Thus, it was not an eating disorder in the sense that most here experience(d) an eating disorder. The obsession with food, rather, grew from a fear of the symptoms of IBS. IBS itself is not an eating disorder, but many people with eating disorders may have IBS and some people with IBS may grow obsessed with what they do, don't, can, or cannot eat and thus may experience symptoms of an eating disorder. That, is of course, the long answer.

I do believe that PC has a board for physical health problems if you scroll a bit further down.