I'm not quite sure where the name Serotonin Syndrome originated, and haven't heard it used before, but this is what I think you're referring to. A little known fact about PD is that dopamine isn't the only problematic player in the equation. In fact, most individuals with poor dopamine levels and normal Serotonin levels are able to compensate and might only have tremor (tremor is in fact a good sign, because it shows that your body is trying to compensate!). It is when the body's Serotonin levels drop that patients develop more serious akinetic symptoms which are characteristic of the more serious Type B Parkinson's. According to Dr. Iacono, the lack of Serotonin in these patients causes them to experience "sleep-wake cycle inversion", (whereby the might fall asleep at any time of the day), "fractionated sleep", (causing them to wake up multiple times during the night), and depression. It is for these reasons that physicians prescribe SSRI's (Selective Serotonin Reuptake Inhibitors) such as Prozac, Paxil, and Zoloft. In addition to these medications, Dr. Iacono recommends that all his patients take a B-complex vitamin AT NIGHT along with a Banana. Banana's, turkey, and peanuts are foods rich in tryptophan, a precursor of Serotonin which requires B vitamins to produce Serotonin. Webmaster, Pallidotomy.com [log in to unmask]