can toothache cause exterior redness around mouth
Dental abscess A dental abscess, a severe tooth infection, can cause throbbing pain, swelling, redness, fever, and more. Thermal burn of mouth or tongue A thermal burn of the mouth or tongue can cause pain, blisters, peeling skin, and temporary loss of taste. Canker sores Canker sore symptoms begin with a tingling sensation, followed by a red bump that becomes an ulcer.