One of the main ways schizophrenia drugs differ is in how they inhibit a brain receptor for dopamine, a key neurotransmitter that is overactive in some parts of a schizophrenic's brain.
Manhattan psychiatrist Drew Ramsey recalled that early in his career, he examined a patient with daily panic attacks and noticed a swelling on her shins, a classic sign of Graves' disease, a form of overactive thyroid that can cause severe anxiety.