My 5 yr old son has had an incurable rash on his bottom for 2 years. I have tried everything. 3 pediatricians, pediatric dermatologist and an allergist has seen him and were unable to give me an answer on what is causing it. When I say I have tried everything, I mean everything. Ruled out strep bacteria and parasites, no allergies to environmental things from the derm. I switched to an organic, harsh chemical free soap and shampoo and laundry detergent. I don't know what else to do. His rash is raw and painful. He has internal and external hemorrhoids. Constipation, chronic sinusitis and asthma. Getting help from a forum of dermatologists is my last hope to give my son some relief.