What I thought was a cold sore gone rogue turned out to be an infection of the gland between the lips and the face (which I didn't know existed)! Doctor popped it
Can you Squeeze and Pop a Cold Sore? – Blister Balm®
Cold Sores: What are they? What causes them? – Blister Balm®
Popping a Cold Sore: What Happens and What to Do Instead
Popping a Cold Sore: What Happens and What to Do Instead
Cold Sore Stages, Symptoms and Treatment
Cold sore - Symptoms and causes - Mayo Clinic
Why Shouldn't I Pop a Cold Sore? (with pictures)
How to get rid of a herpes above my lips in two days - Quora