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Published on: December 11, 2012
Necrotizing fasciitis and death following an insect bite
Dinesh Malcolm G Fernando1, Chandishni I Kaluarachchi, Champa N Ratnatunga
1Department of Forensic Medicine, Faculty of Medicine, University of Peradeniya, Kandy, Sri Lanka. dineshmgfdo@yahoo.com
The American Journal of Forensic Medicine and Pathology
|August 8, 2013
Summary
A tick bite led to a fatal case of necrotizing fasciitis caused by Group A Streptococcus. Early recognition and aggressive treatment are crucial for this rare, rapidly progressing infection.
Area of Science:
- Medical Microbiology
- Pathology
- Infectious Diseases
Background:
- Insect bites, particularly from ticks, can rarely lead to severe secondary bacterial infections.
- Necrotizing fasciitis is a rapidly progressive soft tissue infection with high mortality.
- Prompt diagnosis and intervention are critical for managing necrotizing fasciitis.
Observation:
- A healthy male presented with a swollen, painful left arm post-tick bite.
- The patient rapidly progressed to shock and expired within 48 hours.
- Postmortem examination revealed necrotic subcutaneous tissue and skin changes consistent with necrotizing fasciitis.
Findings:
- Group A β-hemolytic Streptococcus was identified as the causative agent from infected tissue.
- Histopathology confirmed necrotizing fasciitis, characterized by subcutaneous necrosis.
- The infection extended below the elbow, involving skin and subcutaneous layers.
Implications:
- Clinicians must maintain a high index of suspicion for necrotizing fasciitis following insect bites.
- Aggressive and timely treatment is essential to prevent fatalities from this rare complication.
- Pathologists and medical professionals should be aware of the potential link between insect bites and severe bacterial infections like necrotizing fasciitis.
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