Cold sore: A cold sore will develop a clear cyst, no puss. If the the cyst you popped had puss it was most likely a pimple. Also, cold sores usually occur at the same basic location over and over.
Answered 1/21/2017
4.3k views
4 doctors weighed in across 4 answers
5 doctors weighed in across 2 answers
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question