[Clinical manifestations in acute Lyme diseases].

Analyzing the clinical observations of 1343 patients, made in the Kama river region in 1991 to 2002, could establish a number of characteristic syndromes of the acute period of Ixodes tick-borne borreliotosis (ITBB). The early period of the diseases manifested itself as two forms: erythematous in 1041 (77.5%) patients and erythema-free in 302 (22.5%). The erythematous form was characterized by the occurrence of the major clinical marker--erythema migrans at the site of tick suction. In Russia, the clinical features of the acute phase of borreliotosis were marked by the early (at weeks 2-3 of the disease) affliction of different organs (the liver) and systems (the nervous, cardiovascular, and locomotor ones). The leading clinical types of the erythema-free ITBB were neurological, arthromyalgic, influenza-like, cardiovascular, hepatitis, regional lymphadenitis, and mixed. The diagnosis of ITBB is established on the basis of a characteristic epidemiological history, clinical manifestations by taking into account the most common types of its early period and the data of a serological survey by the proposed algorithm.