sounds very similar to me, loads of allergies..dairy, soy, gluten, tomato seeds and skin, celery, all types of pollens, dust, perfumes, sticking plasters, even some allergy tablets! I too have had gastro problems (megga heartburn/indigestion, bloody stols, runs and constipation in the same day) for years and have asthma, eczema and hyperhydrosiS.
sorry i can't give you any answers as my GP is unwilling to contemplate a link of all the symptoms to one diagnosis so treats each as a different one. though i do know there is no typical chrones, the symptoms vary depending on where the irritation /fissures are, the individuals intollerances and what has been eaten. some chrones suffer weight loss where some undiagnosed ones actually put on lots of weight. it can even effect your walking in some cases. a camera up your bum and down your throat (preferably not the same one!) will show fissures if you have chrones.
What i can give you is the reassurance you are certainly not alone.