how would biting as self harm when they other day on Wednesday April 2 when I bit myself because I was either overwhelmed or angry. I still believe that I was overwhelmed! Everything I read on an official am or autism site, they said that there was no reason why that just a selective mutism individual just be biting themselves. I found a video under the blog title "this sounds familiar that I have done when I was younger". "While selective mutism is primarily characterized by the inability to speak in specific situations, it's not a typical symptom for individuals with selective mutism to bite themselves when angry or overwhelmed . However, some individuals with selective mutism may exhibit other behaviors associated with anxiety, such as screaming , shouting , jumping on furniture , or playing too rough . Here's a more detailed explanation: Selective Mutism and Anxiety: Selective mutism is a...