My son's never had a blockage, but he has irritable bowel symptoms from time to time. I had to bring him home from school last week because he was in so much pain, but his last occurrence was 4 months prior to that.
There's no rhyme or reason to when an attack occurs. He has no food allergies. There's no pattern relating to what he eats or when. Sometimes we think it's stress related, but then he'll get an attack a week after a major school test and not before it.
Our pediatrician says there's nothing for it but to manage symptoms when they crop up. That means something to help with the gas, and diarrhea, and he takes warm bathes and uses a heating pad to keep the pain manageable. When he has an attack, it can last 1 to several days, but fortunately the attacks are getting less frequent.
I'm trying having him eat a small bowl of coleslaw every day now (we try different dressings to give it a bit of variety). Cabbage (raw) is suppose to be very good for intestinal problems and cabbage juice has been known to heal up gastric ulcers.
I'm hoping it gets better as he gets older (he's 12 now), but sometimes it's not something they grow out of.
It's hard sometimes, but the school nurse tells me he's not the only one and some of the kids have it much worse.