Medicines are drugs used to treat symptoms and diseases, but they should be used with caution and with the doctor's advice. This is important because some medications cause addiction in the human body. For example, if a person uses morphine (a powerful painkiller to treat pain) for a long time, the body will get used to it and the person becomes dependent on it.
<span>If a person's body becomes so accustomed to a particular drug that it can only function normally if the drug is present, that person is <u>dependent </u>on the drug. </span>
