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[Painful lymphadenopathy after an insect bite-a case report].
S Vukovic1,2, A Anagnostopoulos3, R Zbinden4
1Faculty of Medicine, University of Bern, Bern, Schweiz.
Summary
Tularemia, a bacterial zoonosis, can be contracted from insect bites. This case highlights a 36-year-old man diagnosed with ulceroglandular tularemia via PCR and serology after an insect bite, successfully treated with doxycycline.
Area of Science:
- Medical Microbiology
- Infectious Diseases
- Zoonotic Infections
Background:
- Tularemia is a bacterial zoonosis caused by Francisella tularensis.
- Transmission commonly occurs via arthropod vectors (ticks, insects) or direct contact with infected animals.
- Ulceroglandular tularemia is the most common clinical form, characterized by a localized lesion and regional lymphadenopathy.
Observation:
- A 36-year-old man presented with acute symptoms including fever, chills, and headaches.
- He developed a painful, unilateral inguinal lymphadenopathy with distinctive red-livid skin discoloration.
- The symptoms followed an insect bite on his abdomen.
Findings:
- Diagnosis of ulceroglandular tularemia was confirmed using polymerase chain reaction (PCR) and serological testing.
- The patient's clinical presentation was consistent with tularemia following an insect bite.
- Laboratory confirmation via PCR and serology provided definitive diagnosis.
Implications:
- This case underscores the importance of considering tularemia in the differential diagnosis of febrile lymphadenopathy after potential vector exposure.
- Prompt diagnosis and appropriate antibiotic treatment, such as doxycycline, are crucial for favorable outcomes in tularemia.
- Public health awareness regarding tularemia transmission routes, including insect bites, is essential for prevention.
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