It is possible that a toothache can originate in an affected nerve because an infection has penetrated the center of the tooth or due to trauma (injury).
Pain A throbbing sensation in the tooth. An intense, stabbing, and persistent pain radiate to the neck, ear, and jaw. It gets worse when lying down.
Sensitivity - The person feels discomfort when chewing, clenching the teeth, and when consuming hot or cold foods
Gum injury - An area of swelling in the gingival area near the tooth has the appearance of a pimple from which pus drains.