Is extreme anxiety normal with hyperthyroidism? Also apathy and a feeling of going crazy

Quite possible. Hyperthyroidism commonly causes rapid swings in emotional state so anxiety and feeling like you are going crazy may be due to your overactive thyroid. The big question is have you started treatment and for how long. Medical therapy with methimazole should bring down your high thyroid hormone levels in 3-4 weeks and your anxiety should resolve if you take your medication consistently.
Anxiety. Hyperthyroidism can cause racing thoughts and anxiety that lead to apathy and a sense of being out of control. Consult with your Dr about medication that can help reduce symptoms as well as Cognitive Behavioral therapy with a psychologist to restructure your anxious thought process.