Chronic pain is difficult to treat
Acetaminophen is usually inadequate
Non-steroidal agents have long term toxicities- renal and cardiac and annual bleeding risks
Opioids are available in all countries [Oxycontin, Vicodin, Tramadol, Tramacet, etc] and prescribing at low doses invariably lead to higher doses/more powerful opioids and then addiction.
So the BIG question is: how to treat chronic pain conditions effectively, without causing addiction?