Erythema Migrans: Diagnostic Clue or Criteria for Lyme disease?

Banik D and Chowdhury U

Published on: 2020-04-07


Erythema Migrans (EM) is a unique skin manifestation of Lyme disease. Early Lyme disease is a clinical diagnosis based on Erythema Migrans and possible exposure to the tick. There is no need to order Two-tired serologic testing to diagnose the condition. Though EM may present in different patterns other than classic Bull’s-eye (target lesion) appearance; only the Bull’s-eye pattern of EM is pathognomonic for Lyme disease.