- General painkiller injection (systemic):The medication circulates throughout the body via the bloodstream, like a “widespray.” While it can relieve pain, its effect is short-lived (only a few hours) and it easily causes side effects such as dizziness, drowsiness, or gastrointestinal discomfort.
- Nerve block (regional):Through precise ultrasound guidance, the medication is injected directly next to the “pain-causing nerve.” Like a “precision sniper,” it is highly targeted and has a stable and long-lasting effect (usually lasting several weeks to months), effectively reducing dependence on oral medications.
