Bruxism is a destructive habit that is defined as the nonproductive diurnal or nocturnal clenching or grinding of the teeth. This study investigated whether the combination of physical abnormalities, type A behavior pattern, and the perceived desirability and controllability of life stress are related to bruxism. The subjects for the study were 125 dental patients who were classified as bruxers...

Although expectation has been the most widely studied of the mechanisms that drive the placebo effect, we still don't know how it works. We don't know how the thought that one will respond to a substance in a certain way is converted to symptom relief, intoxication, or airway resistance; the pathway between expectation of a response and the response itself remains uncharted. Nonetheless, in the...

84 Dr Shoptaw is a Professor in the Department of Family Medicine at the University of California, Los Angeles. Methamphetamine is a long-acting stimulant. It goes by various street names, including crystal, tina, speed, and crank. It can be injected, insufflated (snorted), smoked (eg, by heating on aluminum foil and inhaling the vapor through a pen or straw), taken orally, or taken via “booty-...