Strange red rash with freckle like insect bites that tingle on calf?

? . Have you brushed up against any soft cactuses? The small spines can cause same pinpoint red bumps that are itchy/ tingly. Other contact irritations may cause this type of reaction as well and the list of plant contact irritations is huge.
Not sure what it is? This rash would likely need to be examined and more history obtained to be able to provide you with useful input about the diagnosis or possible treatment.