One look is worth a: 1000 words. A broad differential would be; bug bites of some type, a viral rash, some broken blood vessels, contact dermatitis from some plant, localized allergic reaction. If they cause you no symptoms it is probably safe to watch for 7-10 days and see if they go away. You could also try to use an over the counter steroid cream.
Answered 4/3/2018
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