What is Trench Foot? What are the Symptoms?
Foot damaged due to prolonged exposure to cold and moisture. Trench foot occurs when cold temperatures and moisture combine, causing restricted blood flow to the foot. Symptoms of trench foot include numbness, pain, redness and swelling.
Advanced trench foot often involves blisters, open sores and infections which may require surgical debridement and in severe cases, amputation.
Unlike frostbite, trench foot usually occurs at temperatures above freezing.

What increases the risk of getting Trench Foot?
– Exposure to cold temperatures.
-Moisture in and around the shoes.
-Overlying tight shoes/boots.
-Being still for long periods of time.
-General poor health.
How did the term ‘Trench Foot’ come?
During WWI, the prevalence of trench foot increased due to, you guessed it, trench warfare, where soldiers stood in waterlogged, muddy, cold trenches for long periods of time. More than 20,000 British troops were treated for trench foot between 1914 and 1915. Apparently the condition was first reported in 1812 by a French army surgeon in Napoloen’s army.
Other terms used:
-Jungle Rot during Vietnam war.
-Nonfreezing cold injury.
-Immersion foot or immersion foot syndrome which is what I would diagnose someone with if I were to see it.
How was Trench Foot prevented during war times?

Can People Still get Trench Foot (Foot Immersion Syndrome)?
-Military personnel during training and service. This injury can occur outside trenches!
-People who are homeless in unsanitary, cold, wet environments.
-People who stand in water for extended periods of time for their work without adequate foot protection e.g. fish processors
-People who attend music festivals and neglect to change out wet sock and shoes.
-People doing a long hikes, multi-day hikes and competing in multi-day challenge events like adventure racing and Eco Challenge / World’s Toughest Race with Bear Grylls.

How long does it take to get Immersion Foot Syndrome?
Most cases of immersion foot syndrome require exposure to cold, wet conditions for 1-3 days but it can occur in 10-14 hours.
How is Immersion Foot Syndrome treated?
By slowly rewarming the feet. Too fast will cause pain and swelling. Antibiotics may be required if a bacteria infection is suspected by health professionals. When sleeping or resting, don’t wear socks.
How can Immersion Foot Syndrome be prevented?
By keeping the feet clean, warm, and dry. Think talc use, good socks, good shoes, washing feet and drying them out after exposure to wet. Not wearing socks when sleeping can help dry the skin out. Seems simple, but just not during war time.
Check out this blog article here about how to prevent immersion foot for a multi day sporting events. It provides great detail on what a number adventure racers do to save their feet.



References
– https://www.sl.nsw.gov.au/stories/woollen-comforts-home
-https://camdenhistorynotes.com/2020/03/10/wartime-sock-knitting/
-https://theconversation.com/one-million-pairs-of-socks-knitting-for-victory-in-the-first-world-war-30149
-https://news.yahoo.com/technology-socks-time-war-152954728.html?guccounter=1&guce_referrer=aHR0cHM6Ly93d3cuZ29vZ2xlLmNvbS8&guce_referrer_sig=AQAAABZm0Q_SDMNPktF9v1yW9h7flv-DlGZjgIqPQxYJkpWW5Uf5VzVlG9iRhrLH_TC5SqvA1Bf86QpByW3GlUcDZd0uBtckvAnIiJdU4Tsagkwu7mjsaxNR-hJEPoddb8ZwI9bly2Zzx2HU8LmSgYyGIu2DsTXoPJ6daQ-Eij05VKXO
https://en.wikipedia.org/wiki/Trench_foot#/media/File:Trench_foot.jpg
https://www.furtherfaster.co.nz/blogs/furtherfaster/how-to-avoid-blisters-and-trench-foot-when-racing
https://www.artgallery.nsw.gov.au/collection/works/OA18.1960/#places
https://journals.sagepub.com/doi/full/10.1580/06-WEME-LH-027R.1
