Show I Irritation and Pain A sharp definition must be drawn between irritation and pain Irritation Is not pain but only a fr frequent quent cause of it Thus a crumb lodged In the larynx near the vocal cords produced violent irritation a and d prolonged cough coughing ing which often results in actual pain So too a fly or a speck of dustin dust dustin in the eye eye- sets sets up violent Irritation and inflammation followed by acute pain Of the surface of the body the fingel finger finger fin fin- ger gel tips and the end of the tongue are most sensitive for instance a burn burnon burnon on the finger is much more painful than one on the back would be while one on the tongue would be more painful painful- still Deep wounds are not painful as a arule arule arule rule save as regards the surface in in- jury Of pains pain's not caused by external external external exter exter- nal injuries neuralgia of the fifth nerve the one which supplies the skin sidn of f the head and face is the most intense It has frequently driven people people people peo peo- mad for th the time being and sufferers sufferers suf suf- have been known to cut and even burn the flesh In desperate attempts attempts at at- tempts to relieve it The rupture of the branches of the dental nerve in in tooth tooth drawing tooth drawing drawing also causes agony so intense that it has been stated that no human bei being g could endure it it for more than two seconds at a time |