Scalp eschar and neck lymphadenopathy caused by Rickettsia massiliae
| Autor: | Antonio Cascio, Natalia Camarda, Valeria Blanda, Malgorzata Wasniewska, Filippo De Luca, Chiara Iaria, Sara Bombaci, Mariella Valenzise, Alessandra Torina |
|---|---|
| Přispěvatelé: | Cascio, A., Torina, A., Valenzise, M., Blanda, V., Camarda, N., Bombaci, S., Iaria, C., De Luca, F., Wasniewska, M. |
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Male
Pathology Letter Epidemiology lcsh:Medicine Serology Medicine Rickettsia Rickettsia massiliae bacteria fever biology Rickettsia Infection tick Infectious Diseases medicine.anatomical_structure medicine.symptom Dermacentor Human DNA Bacterial Microbiology (medical) medicine.medical_specialty Adolescent Settore MED/17 - Malattie Infettive Molecular Sequence Data Infectious Disease Eschar Tick lcsh:Infectious and parasitic diseases Cicatrix Bacterial Typing Technique lymphadenopathy lcsh:RC109-216 eschar scalp eschar and neck lymphadenopathy Alopecia Animals Bacterial Typing Techniques Base Sequence Humans Lymphatic Diseases Rickettsia Infections Scalp Letters to the Editor Scalp Eschar business.industry Animal lcsh:R Lymphadenopathy biology.organism_classification Spotted fever Lymphatic Disease business |
| Zdroj: | Emerging Infectious Diseases Emerging Infectious Diseases, Vol 19, Iss 5, Pp 836-837 (2013) |
| Popis: | To the Editor: Scalp eschar and neck lymphadenopathy is a common clinical entity that most frequently affects women and children during spring and fall. It is usually caused by Rickettsia slovaca and R. raoultii. Typical clinical signs are a scalp lesion at the tick bite site and regional, often painful, lymphadenopathy. Acute disease can be followed by residual alopecia at the bite site (1,2). Two designations have been proposed for this syndrome: tick-borne lymphadenopathy and Dermacentor-borne necrosis-erythema-lymphadenopathy (both have been associated with R. slovaca); however, the most generic and all-inclusive term is scalp eschar and neck lymphadenopathy. R. massiliae belongs to the spotted fever group rickettsiae, is distributed worldwide, and is transmitted by ticks of the genus Rhipicephalus (3). To our knowledge, only 3 cases of R. massiliae infection in humans have been documented and confirmed by molecular methods. The first case was detected in a blood sample from a patient in Italy who had Mediterranean spotted fever (4); the second case was in a patient in southern France who had spotted fever and acute loss of vision (5); and the third case was in a woman in Argentina who had fever, a palpable purpuric rash, and tache noire (3). We report a case of R. massiliae infection that resulted in scalp eschar and neck lymphadenopathy. On May, 10, 2012, a 13-year-old boy was examined for headache, high fever, and right painful neck and occipital swelling. Six days earlier, a tick had been removed from the top of his scalp, after which signs and symptoms arose and gradually worsened. Physical examination revealed temperature 39.5°C, pulse rate 70 beats/min, and respiratory rate 20 breaths/min. The boy appeared to be in good condition. An ≈1-cm black eschar was noted at the site of the tick bite. Palpation of the neck revealed painful bilateral adenopathies. Other lymph nodes in the occipital region were enlarged. No exanthema was noted, the liver was palpable 1 cm under the costal margins, and the spleen was not enlarged. Laboratory evaluation indicated blood cell counts and liver and kidney function within reference limits, mild elevation of inflammatory markers (C-reactive protein 1.2 mg/dL [reference |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|