Outpatients are very panicky when they hear about the “closed injection”, and most of them are not clear when asked why, saying that others say that it is not good for the body. In fact, “closed injection” in foreign countries is called injection therapy, and some medical workers in the country will abuse the technology, thus causing our patients to worry about the technology. Then what is “closed injection”? In fact, the “closed injection” is the doctor through the patient’s examination, to find local pressure points, the drug injection to the painful parts, to achieve the purpose of anti-inflammatory, pain relief, and to relieve the role of local muscle tension. The duration can be more than a year in long cases and a few weeks in short cases, depending on the severity of the disease. This is a symptomatic treatment measures, to eliminate the local pain symptoms have a better effect. The “closed injection” is a common method used in the pain department, some patients will be afraid of hearing about “closed injection”, always think that “closed injection” can only temporarily reduce The disease symptoms can only be temporarily reduced, and can not be solved at the root of the problem. Also afraid to play the “closed needle”, from then on to keep playing, can not stop, but also worried about the side effects. Hormonal drugs are not addictive. However, long-term application can produce habituation or dependence, but these two situations may occur only after long-term, high-dose, repeated application of hormones. In contrast, doctors inject closed needles are generally closed once or several times depending on the condition, with an interval of 7 to 10 days or a month each time, and generally no more than 3 to 4 times in a row. If you need to continue to inject, the interval is very long, and the dose used is also very small. Therefore, there is no “always have to play” this statement, the human body will rarely produce side effects. This therapy has the advantages of direct drug delivery, simple and safe, rapid results, no hospitalization, low price, few side effects, and easy to accept by patients. So what problems can be solved by “closed injection”? Frozen shoulder, tennis elbow, tenosynovitis, lumbar strain, lumbar spinal ligament injury, interspinous ligament injury, the 3rd lumbar transverse synovial syndrome, lumbar disc herniation and various bursitis, etc., have common lesions, namely soft tissue injury and sterile inflammation, can be closed therapy, that is, playing “closed needle”. And let the majority of patients talk about “closed needle” side effects in which? Playing “closed needle” when the pain is obvious, which is the main reason why patients are reluctant to accept; and later 1 to 2 days, the local pain may be slightly aggravated, these and drug stimulation, local pressure increase, will soon disappear. In addition, the main drug used for “closed injection” is corticosteroid, which, like all other drugs, has side effects. Such as centripetal obesity, body shape change, hairy skin, and even make female patients grow a beard; and can lead to a decrease in the body’s ability to resist infection, wound healing slow; can also aggravate gastrointestinal ulcers, induce hypertension, psychosis, osteoporosis, aseptic necrosis of the femoral head, etc.. However, this is also a long-term, large doses of repeated application of the phenomenon, the general short-term local closed treatment, will not cause these reactions. For safety reasons, doctors always use it cautiously for patients suffering from more severe hypertension, gastrointestinal ulcers, diabetes, psychosis, etc. To prevent infection, closed injections should be performed in a medical unit. Wash the skin with soap and water before closure and disinfect strictly. Observe for 15 minutes after injection to prevent allergic reactions and other reactions. Pay attention to keep the skin clean and prevent contamination for 3 days after closure.