what is back pain?

let me illustrate briefly what is back pain? this is the pain that may be sharp pointing, or any of kind that effects the daily routine and in some cases can make you cripple in this sense that you wont be able to do any hard work more, besides this there are several reasons why this back pain occurs like it can be due to any accident or it can be happen due to lifting of any heavy object, therefore it can effect your daily routine it has become so common that 8 out of 10 gets back pain. so sometime it is simple but sometime it becomes serious.