How might oak mite redness/rash be treated? is it possible to treat adequately at home? oak mite relief

Yes: In most cases keeping the sites clean & applying an OTC cortisone cream will reduce itching. If the sites do not become infected, the problem will fade over time. An oral antihistamine can also help. A cool bath with an oatmeal powder sometimes help if bites are extensive. If any site seems to become swollen, drain or show other sign of infection a visit to the doc may be needed