As you might expect, opium itself is extremely addictive. Raw opium is also very hard to get in the US; the term “opium abuse” likely refers to someone abusing one of the many substances made from opium.
Treating opium addiction is difficult, but not impossible. Recovery from opioid abuse is, as is the case with all opioid drugs, challenging and unpleasant. A monitored, professional detox center can make withdrawal symptoms and the earlier steps easier to bear.