One important factor to understand is that dependence and addiction are not the same. Addiction is defined by compulsive drug seeking as well as continued drug abuse despite the consequences experienced by the individual abusing the drug. Dependence occurs when the body adapts to the use of the drug and starts to rely on it, creating uncomfortable withdrawal symptoms if the drug’s use is stopped.
As the NIDA states, addiction and dependence often go hand-in-hand. When a person becomes addicted to a drug, they become dependent on it as well. However, a person can become dependent on opiates without abusing them and without becoming addicted. This can happen if the individual takes opiate drugs under a doctor’s care for a prolonged period.