Cancer pain affects 60-80% patients, from bone metastasis to nerve compression, but it's treatable in 90% cases. Management follows WHO ladder: Step 1 non-opioids (paracetamol), Step 2 weak opioids (codeine), Step 3 strong (morphine). Pain isn't "tough it out"—it's a signal needing address, improving appetite, sleep. Opioids fear? Addiction rare (<1% cancer); rotation prevents tolerance. Nerve blocks for neuropathic pain and radiotherapy for bone pain are further options of cancer pain relief.