A canker or cold sore, ulcer, or fever blister can be unsightly and even painful. While you may be able to cover it up, it may still cause you discomfort. Instead of just living with your cold sore, call Lake Highlands Dental at 214-613-1279. Our dentists, Dr. Sajjad Ashnagar, Dr. Gabriella Fontes and Dr. Faisal Ladak, can provide you with cold sore treatments in Dallas,Texas.