Hello.
#1 - Stay calm. Do not panic. Real healers do not care what name that disease is called. Everything is cureable. Everything.
#2 - You just need to know what you are doing wrong. The CAUSES. Yes, you are doing some things wrong because your son is sick. See
http://www.eczemacure.com
See the cure protocol.
#3 - See a naturopath, a good one, just like
http://www.cancernaturalcure.com/book1.htm
go download the ebook, print and read.
#4 - See and read at the minimum Book 1 of Barefoot Herbalist MH's members website. There is a free offer. Take advantage of this. Pay later.
http://www.barefootherbalistmh.com/members/
There are no shortcuts to the ultimate cure. You have to begin with your mind / brain / thinking paradigm. When you finally "cross over", acquire a conscious, critical thinking mind... you will uncover many truths... including the cures for your son.
I have laid out cure possibilities right in front of your eyes with 3 simple links. But without an open mind, you will never see the cures written in the pages.
Never depend on other people, never depend on the experts do things for you, and most especially, never believe the drug companies and wherever their tentacles touch. You must do all the thinking, doing and deciding yourself.
If someone tells you your son's disease is "incurable", just smile at them and walk away.
Oh yes, once you have gained the knowledge and cured your son, please pass on what you've learned to help and teach others.
P.S. In the case of Fifth's Disease, go read barefoot herbalist's book 1 NOW so you will not fall into the common mistake of feeding and drugging your son. And the western definition of virus??? All bunk. It is more of the environment, body acidity. If the diagnosis is correct, this 5ths disease will go away in a few weeks when you let your son's immunity and nature take its course. But I would not be complacent at all. I suggest you read all the resources above so you wind up with a healthier family.