After the closed injection, if you feel more pain, may be related to the following causes: 1, may be due to the injection is not timely after the warmth caused by the injection, after the injection of the drug requires patients to try to keep the injection site warm, if necessary, you can also do the local hot compresses. 2, may be due to the closed to do excessive strenuous activities, some patients in the closed treatment, a short period of time to feel significant relief of symptoms, this time will go to do strenuous activities or long-distance walking, which will lead to the original injury more aggravated. Some patients, after the closed treatment, a short period of time to feel the obvious relief of the symptoms, this time will go to do strenuous activities or long-distance walking, will lead to the original damage is more aggravated. Because closed treatment is only symptomatic treatment, the fundamental significance of the injection is to allow patients to achieve short-term symptomatic relief, in order to better rest, rather than continue activities. 3, there may be local compression after injection, very common in the near future, such as after the injection of a large amount of liquid accumulation within the local muscle or soft tissue interstitial space, may produce compression and stimulation of the surrounding tissues, may produce short-term compression and stimulation of the surrounding tissues. Pressure stimulation, may produce short-term pain, but after gentle massage and hot compresses will be quickly relieved.