Lyme borreliosis is the object of numerous misconceptions. In this review, we revisit the fundamental manifestations of neuroborreliosis (meningitis, cranial neuritis, and radiculoneuritis), as these have withstood the test of time. We also discuss other manifestations that are less frequent. Stroke, as a manifestation of Lyme neuroborreliosis, is considered in the context of other infections. The summary of the literature regarding clinical outcomes of neuroborreliosis leads to its controversies. We also include new information on pathogenesis and on the polymicrobial nature of tick-borne diseases. In this way, we update the review that we wrote in this journal in 1995.Lyme disease is caused by species of the genus Borrelia (B. burgdorferi, B. garinii, and B. afzelii) (Fig) and is transmitted by ticks of the genus Ixodes. Lyme disease was named for the place where it was first described in the USA, but this disorder was known in Europe for a long time as a dermatological and neurological illness in contrast to the original rheumatological presentation in the USA. The public health burden of tick-borne pathogens continues to grow substantially. 1 The Centers for Disease Control and Prevention (CDC) reports approximately 30,000 cases of Lyme disease per year but estimates that the true incidence is higher. 2
Clinical ManifestationsThe clinical course of Lyme disease is variable and begins with a skin lesion, erythema migrans, several days after a tick bite. Neurological, cardiac, chronic skin, or articular involvement develops later. 3 Neurological impairment can be classified according to the location of the lesion within the neuraxis or to the time course of the disease.