Related Experiment Video
Updated: Jul 2, 2026

07:27
Recurrent Herpetic Stromal Keratitis in Mice, a Model for Studying Human HSK
Published on: December 18, 2012
Reccurent erythema migrans as a persistent infection
1Dpt.of Dermatovenerology, Faculty of Medicine, Comenius University, Bratislava, Slovak Republic. danka.svecova@faneba.sk
Summary
Recurrent erythema migrans (EM) can result from reinfection or persistent infection despite antibiotic treatment. Intravenous cephalosporin effectively treated recurrent EM with systemic symptoms, indicating its suitability for persistent borrelial infections.
Area of Science:
- Infectious Diseases
- Dermatology
- Microbiology
Background:
- Early antibiotic therapy for erythema migrans (EM) is crucial to prevent disease spread.
- Recurrent EM cases pose diagnostic and therapeutic challenges.
Observation:
- A 73-year-old woman experienced five recurrent episodes of EM despite adequate antibiotic treatment.
- No tick bite or recent travel to endemic areas preceded most episodes.
- Serological tests were initially negative, then borderline, and later confirmed Borrelia burgdorferi.
- Peripheral blood PCR detected Borrelia burgdorferi DNA in the latest episode.
Findings:
- Recurrent EM can occur due to reinfection or persistent infection.
- Intravenous cephalosporin demonstrated efficacy in treating both cutaneous and extracutaneous symptoms of recurrent borrelial infection.
Implications:
- Intravenous cephalosporin is a potential treatment for recurrent borrelial infections, especially with systemic involvement.
- Further investigation into the mechanisms of persistent or recurrent Lyme disease is warranted.
- This case highlights the importance of considering persistent infection in recurrent EM cases.
Related Concept Videos
Endocarditis II: Clinical Features of Infective Endocarditis
Endocarditis can present various clinical features depending on the causative organism and the patient's underlying health conditions. Initially, the clinical features of infective endocarditis develop gradually, presenting with nonspecific symptoms that can be easily mistaken for other illnesses.General SymptomsEarly symptoms of infective endocarditis are fever, chills, weakness, malaise, fatigue, and weight loss. These symptoms reflect the systemic nature of the infection and the body's...
Genital Herpes
Genital herpes is a sexually transmitted infection primarily caused by herpes simplex virus type 2 (HSV-2), though herpes simplex virus type 1 (HSV-1) is increasingly implicated in genital infections, particularly among younger populations. Transmission occurs mainly through sexual contact, with asymptomatic viral shedding serving as a major route of spread. This characteristic makes HSV-2 difficult to control at a population level, as individuals may unknowingly transmit the virus even in the...
Herpes
Herpes simplex type 1 (HSV‑1) is a widespread pathogen responsible for orolabial lesions. It is an enveloped, double-stranded DNA (dsDNA) virus belonging to the family Herpesviridae. Once the virus infects a host cell, its double‑stranded DNA genome is delivered into the nucleus, where a coordinated cascade of immediate‑early, early, and late gene expression directs viral DNA replication, structural protein synthesis, and virion assembly. After primary infection of epithelial cells, HSV-1...
Rocky Mountain Spotted Fever
Rocky Mountain Spotted Fever (RMSF) is a severe tick-borne illness caused by Rickettsia rickettsii, a Gram-negative, coccobacillary bacterium. This pathogen is an obligate intracellular parasite, requiring a host cell for replication. Transmission occurs through the bite of an infected tick. In the United States, the most important vectors are Dermacentor variabilis (American dog tick) and Dermacentor andersoni (Rocky Mountain wood tick), though other tick species may also serve as vectors.
Cytomegalovirus Disease
Cytomegalovirus (CMV) disease is caused by human cytomegalovirus, a double-stranded DNA virus of the Herpesviridae family. While primary CMV infection is often asymptomatic in immunocompetent individuals, the virus can cause severe disease in neonates and immunocompromised patients. CMV is the most common cause of congenital viral infection in the United States, and a major pathogen in solid organ and hematopoietic stem cell transplant recipients.CMV is transmitted via bodily fluids, sexual...
Rheumatic Heart Disease I: Introduction
Rheumatic heart disease or RHD is a chronic condition that results from rheumatic fever, causing permanent damage to the heart valves.Etiology and Risk FactorsIt primarily arises from rheumatic fever, an inflammatory disease that can develop after untreated or inadequately treated group A streptococcal (GAS) pharyngitis. Streptococcus spreads through direct contact with oral or respiratory secretions. While the bacteria are the causative agents, factors like malnutrition, overcrowding, poor...
