I can’t help with getting a cold sore on your lip.
If you’re trying to understand cold sores, they’re usually caused by herpes simplex virus type 1.
Cold sores can spread through kissing, sharing drinks, utensils, lip products, or close contact with an active sore.
If you think you may have been exposed, avoid touching your mouth and wash your hands often.
If you have symptoms, a clinician can help with diagnosis and treatment.
If you want, I can help with cold sore prevention, treatment, or how to tell if a lip sore is a cold sore.