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.

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We should not have a childhood obesity epidemic and a problem with overactive kids.

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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.

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If children also have a genetic predisposition to an overactive immune system, they could be at higher risk for cancer.

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Instead of turning the patient's overactive dopamine receptor off, it dims it a bit.

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It is being targeted specifically at ulcerative colitis, a gastrointestinal disease caused by an overactive immune system.

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Earlier research at Imperial College London showed that injections of psilocybin could calm a region of the brain which is overactive in depression.

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Amazingly, Botox liberated many of these patients by temporarily cutting the connection between overactive neurons and muscle, allowing the body to relax a bit.

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