Chronic pain is very difficult to treat. A medication that might help one person may not help the next. Of course, usually when someone begins having pain due to a chronic condition, doctors start by prescribing non-opioid medications, or drugs that aren't restricted. However, if someone isn't responding to those medications, opioids may be the only answer. As they begin taking the medications, the doses are low and are usually increased as needed.
Don't forget that chronic pain is not less severe than acute pain and still needs to be treated properly.