Desert Sore (Chinctown Ulcer)

Desert sore (Chinctown ulcer/ulcus ambuscado) is necrotic 1-5 cm ulcers on exposed extremities (legs/feet/forearms) in tropical arid regions, from Fusobacterium/Spirillum + malnutrition/sandfly/poor hygiene. Treatment: wound care; debridement; oral antibiotics (metronidazole/penicillin/doxycycline); treat secondary infection; nutrition/hydration; hygiene; avoid sandflies/insects; monitor healing; follow-up tropical medicine/dermatology; distinguish from tropical ulcer/yaws/leishmaniasis.

Common Symptoms

Necrotic ulcers; exposed extremities; tropical arid; bacterial + malnutrition

Causes and Pathogenesis

Bacterial infection (Fusobacterium/Spirillum) + malnutrition + trauma causes necrotic ulcer.

Treatment

Wound care; oral antibiotics; nutrition; hygiene; avoid insects

Preventive Measures

Hygiene; nutrition; insect protection; treat early.

Department to Visit

It is recommended to visit the Dermatology/Tropical-medicine department; an appointment can be booked on this platform before the visit.

Warm reminder: The above information is for health science reference only and cannot replace professional medical diagnosis. If you have related symptoms, please seek medical attention at a regular hospital promptly.