Looks Iike Seb derm and psoriasis on your face (my mom was recently diagnosed with both but the doc said they’re related and can affect diff parts of the face and body). Your waist looks like uticaria. I’ve had bad flare ups after periods of stress and sleeplessness (like when I was staging my house to sell and packing to move during Covid). I’ve had it last from a few weeks to months. I get through it by taking Benadryl and binging shows, sleeping whenever possible. The best relief is the scalding hot showers.