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Several cutaneous entities described in Europe as Chronic Migrans Erythema (CME), Mild Cutis Lymphadenosis (MCL) and Chronic Atrophyc Acrodermatitis (CAA) constitute clinical manifestations of a Borrellia Burgdorferi. The presence of clinical and hystologic lesions similar to those of liquen esclerosus and atrophyc (LEA) and localized esclerodermia (morphea) in patients with CAA has driven to several authors to demonstrate the aethiologic participation of B. Burgdorferi in patients carrying those cutaneous lesions with contradictory results. A serologic study with indirect immunofluorescence (IIF) and FIAX test was performed in 16 patients (9 with morphea, 6 with LEA and 1 with CME) in order to evaluate the role of this microorganism in our environment. Five reactive sera were obtained of which only one presented IgG antibodies titrated at 1/256. The IgM antibodies by IIF and IgG by FIAX test turned out to be negative. A specific relationship between B. Burgdorferi and the studied entities could not be established.