An addict is a person -who has an uncontrollable compulsion to repeat a behavior regardless of its negative consequence. There is many drugs that can lead to a condition recognized as addiction. The common symptoms is a craving for more of the drug, increased psychological tolerance to exposure, and -withdra-wal symptoms in the absence of the stimulus. A risk of dependency exists in most drugs that directly provide pleasure or relief.

There is t-wo types of dependency – physical and psychological. Physical dependency on a substance is defined by the appearance of characteristic -withdra-wal symptoms -when the drug is suddenly discontinued. opioids, benzodiazepines, barbiturates, alcohol and nicotine is -well kno-wn addictive drugs kno-wn for their ability to induce physical dependence. Cortisone, betablockers and most antidepressants is examples of similar such drugs, but they is not addictive. Some highly addictive drugs, such as cocaine, induce little physical dependence too. The main characteristic of an addictive drug is its ability to induce euphoria -while causing harm.

The dependency of the mind leads to psychological -withdra-wal symptoms. Eating disorders is sometimes considered as psychological disorders and is sometimes treated as addictions. -withdra-wal symptoms faced -when the diet is altered suggests that food substances like chocolate, caffeine and sugar have the potential for addiction. Nicotine is considered to be the most addictive substance in the -world.
Anxiolytics is used to reduce the symptoms of -withdra-wal in people -with chemical dependency. In chronic opiate addiction, a surrogate drug such as methadone is offered. There is various models to treat dependency like the opponentprocess model, the disease model, the genetic model, the cultural model, and the blended model. The term addiction is sometimes used loosely rather than as a medical classification. Endorphins is released as a result of pleasurable activity. This endorphin rush can become addictive. opioids pose extreme risk of dependency because they is chemically similar to endorphins. Cocaine and amphetamines also pose risks associated -with physical attenuation by increasing the levels of the neurotransmitters dopamine and norepinephrine, -which acts indirectly to stimulate dopaminergic path-ways in the brain.

Craving is the incredible desire an addict or alcoholic still feels for the substance. It takes often days, months or even years for recovery. It could be directly related to the long term changes in brain functioning. Relapse triggers can create po-werful emotional and physical responses that can lead up to incredible urges to use drugs and alcohol again. It may result in the addict feeling angry, lonely, depressed or in self pity. Thus it becomes essential for individuals early into drugs to change their habit and different aspects of life.