肌肉内注射链霉素出现疼痛,是由於注射技术的错误或注射剂的性质而引起。疼痛可立刻发生或出现较晚,这是由于传入神经纤维的不同传导性的原故。注射后立刻感觉疼痛,这是由于大的有髓纤维传导的。深部呈烧灼样疼痛,是沿看纤细的无髓纤维传导的。有时深部组织中的疼痛感觉,是通过不同大小的有髓纤维或无髓纤维的交感神经节传导的。疼痛感受器在肌肉内注射时受着各种因素的影响,例如注射液的PH度,引起局部反应的注射液的化学成分,以及组织机械性损伤的程度等。后二 Intramuscular injection of streptomycin pain, is due to errors in injection techniques or the nature of the injection caused. Pain can occur immediately or later, due to the different conductivity of the afferent nerve fibers. Pain immediately after injection due to the large myelinated fibers. Burning deep pain was along the slender, non-myelinated fibers. Sometimes the pain sensation in deep tissues is transmitted through sympathetic ganglia of myelinated or nonmyelinated fibers of different sizes. Pain receptors are affected by various factors during intramuscular injection, such as the pH of the injection, the chemical composition of the injection that causes the local reaction, and the degree of mechanical damage to the tissue. After two