Yes, when I was a child I would bite my finger, my hand, my arm, and other people. Biting myself was due to stress. Biting other people was from over stimulation by the that person. Often it was from physical contact (tickling) or intense emotional feelings (like overwhelming love). Rarely if ever did I bite someone out of anger.
My autistic son seems to have very similar traits to mine. In addition, he does bite others out of frustration/stress (but mostly out of love).
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Nothing I post should EVER be considered legal advice. I am not a lawyer. The only legal advice I am qualified to give you is: "If you need legal advice, seek out an attorney licensed to practice law in your area."