I was in patient where the Dr did a brain scan and said I had s chemical imbalance. A good friend just got out of rehab where they did a cat scan and mri. From these tests they gathered the info that her illness was not just alcoholism. I read a book called Beautiful Boy about a meth addict. When he was in withdrawal a Dr did a brain scan to prove that his symptoms were resulting from withdrawal. Those symptoms included severe depression.

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