Your post is very long and to be frank I didn’t read it all. First and foremost, NEVER EVER take STEROIDS of any kind. It looks like larva currens / Larva migrans which is normally caused by hookworm or strongyloides. Have you ever been outside of the US? If so then it could be something else as well.
Some advice I have for you and everyone else reading this. Never try and talk any Dr into believing you if they’re already dead set on insisting you’re wrong. It does no good, you will not change their mind. Don’t bring up that you found such and such on the internet because they have a definition for patients like that, cyberchondria. Majority of them are very patronizing. It is very disheartening you have experienced this with professionals that are supposed to be there to help you.
In their defense they have been brainwashed into believing that we do not have a parasite problem in this country, and yes it is intentional. They truly are ignorant to these diseases. Therefore you will never convince them otherwise. If they were aware then majority of the diseases we have in this country with be null and void. Then the medical system would never make a profit.
Let me take some time to read your entire post. The reply you received today with this protocol was very kind and is pretty good. You may need to start off with a certain medication depending on what you have.