Blister on Lip Not Cold Sore – Causes, Differences & Treatment
A blister on the lip does not always signal a cold sore. While herpes simplex virus type 1 produces the familiar clustered, fluid-filled lesions that tingle before crusting over, numerous other conditions create similar-looking bumps that require entirely different management. Mucoceles, angular cheilitis, allergic reactions, and sunburn represent common alternatives, each presenting distinct clinical features … Read more