Hello. I don't know who to turn to anymore. My child has constant rash…

Hello. I don't know who to turn to anymore. My child has constant rashes since they were one year old. I visited dermatologists, nutritionists, allergists, and immunologists. Nobody can properly treat them. They diagnose different things: atopic dermatitis, toxicoderma, pyodermia. Different treatment, each doctor says that the wrong prescription was given by another doctor. There are no allergies in the tests, only staphylococcus aureus, we took antibiotics. Constant itching, can't sleep. Movable wounds. What should I do? I don't know anymore. I'm crying. I attached photos, there are such rashes all over their body.