1. Why do we feel pain?
Although pain is an unpleasant feeling and emotional experience, it is a protective instinct endowed by nature in the evolution of hundreds of millions of years. Because we can feel pain, we can respond appropriately to harmful stimuli. But pain is not a good taste after all, and no one likes pain.
Second, what can cause pain?
There are many receptors in our tissues (skin, muscle membrane, joint capsule, ligament, tendon, muscle, blood vessel, etc.). ). When medical knife, needle, sound, light, electricity and other means act on the skin, it will excite and produce corresponding sensory organs, resulting in pain.
Injection: In daily medical activities, injection (intravenous infusion, intramuscular injection, skin test) is needed in many cases.
There are two common types of medical aesthetics:
One is injection of anesthetic, and the operation is performed under anesthesia (local anesthesia or general anesthesia), but anesthesia starts from injection (directly injected into the operating area, injected into the nerve in the operating area, injected into the epidural space ...), which will hurt the skin when it penetrates. At the same time, swelling anesthesia is often used in plastic surgery, so the injection amount of anesthetic is relatively large, so swelling and pain will occur when drugs are injected, which is particularly obvious in local anesthesia and liposuction surgery. . Experienced doctors will pay attention to the injection level, injection speed and order. , can greatly reduce the pain in this process.
Another case is the use of botulinum toxin injection and hyaluronic acid injection in micro-plastic surgery. Because the injection beautician uses a special syringe, it is generally not too painful to enter the skin. However, hyaluronic acid has a certain volume, and it may be painful to inject into the dermis, just like a skin test.
There are actually many reasons for the pain, but everyone has a love of beauty. The more operations you have, the more unclean you will feel, and the more painful you will feel. I will continue to explain it to you next time.