I have no experience in this circumstance but I highly recommend staying away from adderall with an injured brain. It is essentially a legal methamphetamine mixture and will cause further imbalance to your already fragile neurobiology.

There are better options out there if you think a stimulant is what you need. Ritalin (methylphenidate), provigil are some safer options. Just remember your brain is trying to heal and messing with the delicate balance of neurotransmitters could be disastrous. Talk to a psychiatrist, or a doctor who knows your history, but in general stimulants are not to be taken lightly.