WOW....i wonder why people have to ask such dumb questions sometimes? hmmm..............
.A concussion is a type of traumatic brain injury that is caused by a blow to the head or body, a fall, or another injury that jars or shakes the brain inside the skull.
So yes, a slap would be able to cause damage if it jars or shakes the head.
I would like to be on that jury as I am assuming that is why the question was asked.
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