MODEL RELEASED. Heroin user. A heroin user about to inject his arm with the drug. A belt around his upper arm acts as a tourniquet,held tight by his mouth. A syringe containing the drug is seen in his hand. Heroin (diacetyl morphine) induces a psychological state of indifference immediately after it is taken. Repeated use causes a physical dependence and tolerance. Tolerance leads to ever-increasing doses being taken to achieve the same effect,often resulting in a fatal overdose. The withdrawal symptoms for a person trying to stop using heroin include muscle spasms and cramps,anxiety,insomnia,nausea,sweating,cramps,vomiting,diarrhoea and fever |