These are assumptions, only way for any of you to know if you have brain damage is from taking a CT Scan of your brain. If you don’t have any structural damage then it’s there’s something wrong chemically in your brain, chemically referring to dopamine. People get anhedonia from stress. Stress doesn’t cause damage to the brain. It’s the way the brains reward center reacts to dopamine. You could just have a blunted dopamine system after invega. But In the medical terms that’s not really actual damage. Just a chemical imbalance.