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Recurrent furunculosis in returning travelers: newly defined entity
Ofir Artzi1, Maya Sinai, Michal Solomon
1Department of Dermatology, Chaim Sheba Medical Center, Ramat Gan, Israel.
Background:
Bacterial skin infection is a common dermatologic problem in travelers, which usually resolves without sequela. In contrast, post-travel recurrent furunculosis (PTRF) is a new unique entity of a sequential occurrence of many furuncles seen after returning home from a trip to the Tropics.
Objective:
The objective of this study was to characterize the disease course and possible causes of PTRF.
Methods:
A retrospective study was conducted on a group of young, healthy individuals (16 males and 5 females), who presented with PTRF after returning from tropical countries.
Results:
In all patients, the first furuncle appeared toward the end of the trip and continued for several months after returning home. The average duration of disease was 8.4 months with an average of 4.2 recurrences. Along the disease course, subsequent recurrences became shorter and milder with longer inter-recurrence intervals. Bacterial cultures most commonly grew methicillin-sensitive Staphylococcus aureus (MSSA, 76.5%). Nasal colonization was demonstrated in 47% of patients. There were neither companion travelers nor family members experiencing furuncles.
Conclusions:
PTRF should be defined as a clinical entity with prolonged travel to the Tropics being its major risk factor. In the author's opinion, a transient immune change in a subpopulation of travelers ignites a series of recurrent furuncles, resolving upon restoration of normal immunity.
Insights
Post-travel recurrent furunculosis (PTRF) is a distinct condition characterized by recurring boils after tropical travel. Methicillin-sensitive Staphylococcus aureus (MSSA) is the common cause, with recovery linked to immune system normalization.
Area of Science:
- Dermatology
- Infectious Diseases
- Travel Medicine
Background:
- Bacterial skin infections are common in travelers.
- Post-travel recurrent furunculosis (PTRF) is a unique condition of sequential furuncles after tropical travel.
- PTRF presents as multiple furuncles occurring after returning from a trip.
Purpose of the Study:
- To characterize the disease course of PTRF.
- To investigate potential causes of PTRF.
Main Methods:
- Retrospective study of young, healthy individuals with PTRF.
- Analysis of disease duration, recurrence patterns, and bacterial cultures.
- Assessment of Staphylococcus aureus nasal colonization.
Main Results:
- The average duration of PTRF was 8.4 months with 4.2 recurrences.
- Methicillin-sensitive Staphylococcus aureus (MSSA) was the most common pathogen (76.5%).
- Nasal colonization with MSSA was found in 47% of patients; recurrences became milder over time.
Conclusions:
- PTRF is a clinical entity with prolonged tropical travel as a major risk factor.
- A transient immune alteration in travelers may trigger recurrent furuncles.
- Resolution of PTRF is associated with the restoration of normal immunity.
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