My 8 year old son's chin (below bottom lip to mid chin) looks bruised. Small purple, red dots appeared yesterday morning and now are slowly fading to a bruised look. I'm curious to know what would cause this. He hasn't had any injury to the area.
You could always take him into the Dr. there are things that can cause speckly bruising but they can do a simple blood test to rule it out.
I had taken my son in for the same thing once. only it appeared on his thigh and was about the size and shape of a baseball. Turned out he was just fine and likely just failed to recall injuring himself. Probably happened in his mixed martial arts class. But better to be safe.