@Angela2659 Have you asked the hosts what it might be? It might not even be an insect, but some plant. Where I live in Mexico, if you walk in the jungle or around where there are cows, there are these tiny ticks you can barely see that cause intense itching. Even when you get rid of them, it continues to itch for a week afterwards. They don't cause lyme disease or anything, they're just really annoying. You can actually get rid of them by scrubbing yourself all over hard with a washcloth and soap in the shower, as they don't burrow under the skin or attach themselves firmly.
If it's some tiny parasite like that, or a mite, what you need to try is a scabies/ head lice soap like Nix. Steroids and topical ointments wouldn't help.