yes, it's real alright. which type of parasite, I don't know. but itching, rashes, even little bumps like you describe, is quite common with parasites. don't worry, there's high probability that you don't have something out of the ordinary. problem is, even the ordinary can be difficult to get rid of. it's also not unusual that commercial natural products don't touch it, not for longstanding or heavy infection. I've had that too.
morgellons, scabies are possibilities, also just regular roundworm infection can cause this. that you are in good health otherwise is a very good sign.
I had itching very bad, honestly, I could have jumped out of my skin, it was aweful. I was taking essential oils, a variety of mixes, so I'm not sure exactly which one got rid of it. but it did leave rather suddenly all at once. I remember the day exactly. and hasn't returned in over a year. mindyou, I still have parasites, but no itchies.
essential oils, they say shouldn't be used internally. I did and had no bad reaction, but it's something that's not recommended. so if you use them this way, be very careful, start with low dose (only a few drops in an empty veg capsule), and make sure you don't react to it, then you can increase a bit. don't go too high with essential oils though.
the mix that took away itching for me was oregano, lemongrass, neem oil. I took about 5 drops oregano (pure, undilute), 3 drops lemongrass, and 10 drops neem. did this 3 or 4x/day. it gave me high anxiety and my blood pressure shot up. but the itching left and has never come back.
for the little bumps, Lugol'sIodine dabbed on it may take them down.