What are the different types of pain-relieving injections?

There are various types of pain-relieving injections, mainly including the following categories: 1. Non-steroidal anti-inflammatory analgesics: Such as diclofenac sodium injection and parecoxib injection, which relieve pain by inhibiting inflammatory mediators. 2. Central analgesics: Such as tramadol injection, which acts on the central nervous system to reduce the perception of pain. 3. Narcotic analgesics: Such as pethidine hydrochloride (Demerol) injection and fentanyl citrate injection, which provide strong pain relief and are commonly used for postoperative or cancer-related pain. 4. Local anesthetics: Such as lidocaine injection, which alleviates pain through local anesthetic effects. 5. Glucocorticoids: Such as dexamethasone injection, which has anti-inflammatory and analgesic effects. 6. Anti-anxiety medications: In certain cases, anti-anxiety drugs such as diazepam may also be used to relieve anxiety associated with pain, thereby indirectly achieving pain relief. The selection of pain-relieving injections should be determined by a physician based on the patient's specific condition, severity of pain, and overall health status. Pain-relieving injections must be used strictly according to medical instructions, with careful attention to dosage and timing to avoid adverse reactions.