Dr Phil Kieran: What can my teenage son do about his cold sore? 

"The cold-sore virus is far more common than you might think - somewhere between 70 and 80% of the population have it."

Cold-sores are a pain - but there's ways to treat them.

Dr. Phil Kieran

GENERAL PRACTITIONER

My teenage son has developed his first cold sore. It’s on his top lip and painful. What treatment would you recommend, and what steps can he take to ensure it does not return?