This chapter targets to provide information to medical students, residents, and nurses on emergency medicine. The concept and definitions of shock have been mentioned. An overview about shock has been given at the beginning of the chapter. Different categories of shock have been elaborated with comparison. Each type of shock has been discussed with its specificities and its management. Septic shock has been extensively discussed and different definitions and terminology have been used. Latest surviving sepsis campaign guidelines have been scribbled down. Hemorrhagic shock has been widely discussed too and a table provided for the differentiation of stages of hemorrhagic shock. Finally, the chapter is concluded with all the references used for accomplishing this chapter.