Sudden pain in both arms. Stabbing pain in left triceps. Bad pain in right forearm. Also tricep area feels numb and not like rest of the skin.?

What R U doing? What sort of activity are you engaged in when this happens? Knowing that is the first step in figuring out what is happening, why and how to change it.
Be seen. Multiple potential causes including potentially a pinched nerve in the neck. Don’t hesitate to be seen for it.