What causes the earlobes to become red, hot, and swollen?
1. Introduction Earlobes that become red, hot, and swollen are typically responding to an acute inflammatory or infectious process, most commonly allergic contact dermatitis from nickel jewelry or a localized bacterial skin infection. The robust blood supply to the earlobe rapidly dilates in response to localized histamines or invading bacterial toxins, leading to marked erythema, … Read more