My nine year old brother has a re-occurring, unexplainable rash. This is maybe the fourth occurrence and we have still not been able to pinpoint its exact cause. Recently, a doctor suggested that it was poison ivy, but it is not itchy or spreading. We did have a theory that it may be an allergic reaction to apple pesticides, but he hasn't eaten any recently. I was wondering if anybody had any ideas as to what this might be, or an accurate description of a poison ivy rash. I know this is difficult without knowing his diet or environment, but I'll enjoy any feedback!