Hello, and thank you for giving of your time. My 4 year old son has developed an intensley ithchy rash on the back of his buttoks, calfs, thighs and elbows. The itchiness seems to get worse at night. by the time I get to see the rash its a bunch of opened bruises or scabs. I don't think they have much color before he scrathes them. He has been taking homeopathics for pinworms. I don't know if this has anything to do with it. My gut feeling is this is non allergy related. do you think it has to do with parasites? if yes, what type of parasite causes this, and what can be done about it?