cold sore

US /ˈkoʊld sɔːr/
UK /ˈkoʊld sɔːr/
"cold sore" picture
1.

唇皰疹, 口唇皰疹

a small blister or group of blisters on the lips or around the mouth, caused by the herpes simplex virus

:
She woke up with a painful cold sore on her lip.
她醒來時嘴唇上出現一個疼痛的唇皰疹
Applying an antiviral cream can help treat a cold sore.
塗抹抗病毒藥膏有助於治療唇皰疹