Dd1 has taken to biting herself when she is being told to stop or told no when she is asking for something she can't have or doing something she shouldn't do. SHe really bites into her arm/wrist. She has only started this a couple of days ago.
Dh and I have held her hand and said she needs to be gentle to herself - we also do the sign for gentle but she still does it..... we think it is frustration but we can't be sure - given her lack of language.
Any suggestions??