When someone has a anxiety disorder can they be abusive? Does anyone know if this disorder goes away or its an ongoing thing.?

No, they should tell a dr. how they feel. There are good meds for anxiety.

I have never heard about people suffering from anxiety disorders being abusive. A person might, however, be abusive AND have an anxiety disorder they can conviently blame whenever they hurt someone, and that is a dangerous and dark rabbithole to fall into. These are both problems that need to be addressed. If someone is abusing you you need to find help, for your own sake. If you are the one abusing someone you also need help. Speak to a doctor or therapist as soon as possible.