Skin Changes in Suspected Lyme Disease

Area of Science:

• Dermatology
• Infectious Diseases
• Public Health

Background:

• Ticks transmit various pathogens, posing significant global and regional healthcare challenges, particularly concerning tick-borne diseases like Lyme borreliosis (LB).
• Lyme borreliosis, caused by Borrelia burgdorferi sensu lato, presents with diverse clinical manifestations, including characteristic skin lesions such as erythema migrans (EM), borrelial lymphocytoma (BL), and acrodermatitis chronica atrophicans (ACA).
• The incidence of tick-borne diseases is increasing geographically, influenced by tick population density and human exposure risks.

Observation:

• A 58-year-old female presented with atypical, widespread skin changes on her lower extremities and hands, initially suspected as livedo reticularis.
• Laboratory tests revealed positive IgM antibodies for Borrelia burgdorferi, with IgG being borderline.
• The patient's skin lesions showed a significant positive response and complete regression following a 3-week course of Amoxicillin.

Findings:

• The patient's clinical presentation, though atypical, combined with positive serology for Borrelia burgdorferi, led to a diagnosis of Lyme disease.
• Histopathological analysis of skin biopsies was compatible with livedo reticularis, a condition that can sometimes represent an atypical presentation of ACA.
• Successful treatment with Amoxicillin resulted in the complete resolution of all dermatological manifestations, with no recurrence observed during a year of follow-up.

Implications:

• This case underscores the importance of considering Lyme disease in the differential diagnosis of unusual or atypical skin conditions, even in the absence of classic symptoms.
• The successful treatment highlights the efficacy of timely antibiotic intervention in managing Lyme disease and preventing potential long-term complications.
• Recognizing the broad spectrum of Lyme disease presentations is crucial for accurate diagnosis and effective public health strategies to combat tick-borne illnesses.