In a study of cytokine production ex vivo by Borrelia burgdorferi-stimulated peripheral blood mononuclear cells from 27 patients with culture-positive erythema migrans, production of inflammatory cytokines predominated, particularly gamma interferon and, to a lesser degree, tumor necrosis factor alpha. In contrast, with the exception of interleukin-13, anti-inflammatory cytokine production was ...

Carditis is an uncommon presentation of the early disseminated phase of Lyme disease. We present the case of a young female who presented with erythema migrans and was found to have first-degree heart block which progressed to complete heart block within hours. After receiving ceftriaxone, there was complete resolution of the heart block in sequential fashion. Our case illustrates the importanc...

Lyme disease is often identified by the hallmark erythema migrans rash, but not all early cases present with a rash. In other cases the rash may be unseen or unrecognized by a physician. In these situations, Lyme disease is difficult to diagnose because it masquerades as a non-specific viral-like illness. The seasonal peak of Lyme disease ranging from May through September overlaps with that of...

Atypical Early Presentations Early Lyme disease classically presents with a single erythema migrans (EM or "bull’s-eye") rash. The EM rash may be absent in over 50% of Lyme disease cases, however. Patients should be made aware of the significance of a range of rashes beyond the classic EM, including multiple, flat, raised, or blistering rashes. Central clearing was absent in over half of a seri...

Question: Is a single 200-mg dose of doxycycline effective for preventing Lyme disease after an Ixodes scapularis tick bite? Design: Nadelman et al conducted a randomized, doubleblind (patients and study personnel), placebo-controlled clinical trial over a period of 9.5 years (May 1987 to December 1996) to determine the effect of a single dose of doxycycline on prevention of Lyme disease after ...

We determined cellular and humoral immune responses to Borrelia burgdorferi lysate and to recombinant flagellin (FlaB), OspC, and OspA in acute- and convalescent-phase samples from 39 culture-positive patients with erythema migrans and in 20 healthy control subjects. During the acute illness, a median of 4 days after the onset of erythema migrans, 51% of the patients had proliferative cellular ...

BACKGROUND Lyme disease is an infection that is estimated to affect over 300,000 people in the United States annually. Typically, it presents with erythema migrans (EM), an annular rash at the site of tick attachment, within 3 to 30 days of inoculation. Untreated patients may progress to early disseminated disease. A further complication, Lyme carditis is rare but may occur several weeks later....

BACKGROUND Lyme borreliosis disease results from infection by members of the Borrelia burgdorferi sensu lato complex. The most common clinical presentation of Lyme borreliosis is erythema migrans (EM). To gain knowledge of the epidemiological parameters and the risk factors of EM in Slovenia, a survey has been carried out in 2010. METHODS A short anonymous and self-administrated questionnaire...