Disc treatment duration: ① acute disc with severe pain: 4–8 weeks for significant improvement, ② chronic disc/recurring: 2–3 months for stabilization, ③ ruptured disc with leg symptoms: 3–6 months, ④ post-operative disc: 1–2 months, ⑤ maintenance phase: ongoing periodic care. Most see major improvement within 3–4 weeks. Imaging follow-up at 3 months if needed.