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Burningman and Trench foot
PLAYA FOOT is a malady unique to the Black Rock Desert caused by the alkali dust that makes up the desert. It is, in essence, a chemical burn.
https://burningman.org › preparation › health-safety

Trench foot is caused by prolonged exposure to a cold temperature that is usually above freezing and damp, sometimes unsanitary conditions. The condition ultimately causes skin and tissue breakdown which increases the risk of infection and increases associated morbidity and mortality.
https://www.ncbi.nlm.nih.gov/books/NBK482364/