http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. Addicts, even those who have been abstinent for long periods of time, are often still vulnerable to their own memories of prior drug use.  For example, exposure to the same environment in which they commonly used drugs - a contextual memory - can increase their craving for the drug dramatically and can lead to relapse. http://medicalxpress.com/news159687067.html Psychology & Psychiatry Thu, 23 Apr 2009 06:31:35 EST news159687067