A Clinical Study of 94 Patients with Tick Bite in 8 Medical Institutions in Gifu Prefecture

Abstract

Ninety-four patients of tick bite from hard ticks (Acari: Ixodidae) who visited 8 medical institutions in Gifu Prefecture from 1990 to 2015 were summarized. The patients group included 41 males and 51 females, and the average age was 55.0. Most patients visited from April to July. In this study, the most common species was Amblyomma testudinarium, which was rarely reported in the adjacent prefectures, Toyama and Ishikawa. Among the ticks, 47.4%, 32.8%, and 18.1%, were nymphs, adult females, and larvae, respectively. Ticks were found widely on the trunk, head/neck, lower extremities, and genital/inguinal parts. Although one patient had cellulitis-like swelling; and another had a fever, they recovered without any sequelae.