<i>Loxosceles rufescens</i>: single-institutional epidemiology, diagnosis and treatment

Loxosceles rufescens, also known as “violin spider” due to its characteristic appearance, is a medium-sized spider species that can potentially pose a threat to humans. For this study, patients who presented to our hospital’s Poison Control Center between January 1, 2022, and December 31, 2022, and met the following inclusion criteria were included: Suspicion of a violin spider bite, as evaluated by our center. Our protocol involves an initial local treatment, which includes local washing with copious water and disinfection, along with the application of chlorotetracycline hydrochloride. Systemic therapy utilizes Amoxicillin and Clavulanic Acid as the first-line medication. The primary endpoints of this study are the timing and effectiveness of the treatment for cutaneous lesions. Demographic and anamnestic information regarding age, gender, and timelines was summarized using descriptive methods. Our study’s results indicate that erythema and pain are the most frequent symptoms. Loxoscelism is highly concentrated in the Western hemisphere and is considered the only proven arachnological cause of dermo-necrosis. In recent years, there has been an increase in diagnoses.