Chilblains, pernio, kple trench foot: vuvɔdzikpɔkpɔ si me tsikpe mele o¶

Nuveviwɔame siwo mewɔa nuvevi ame le vuvɔ me o (NFCI) tsi tre ɖi na nutome ƒe nuveviwɔame ƒe hatsotso si bɔ, si me vevesese le, eye wògbɔdzɔna zi geɖe si to vovo na vuvɔ ŋutɔŋutɔ. Togbɔ be vuvɔ bia be dzoxɔxɔ si mede tsikpe o nu nate ŋu awɔ tsikpe ƒe kristalo le ŋutilã me hã la, vuvɔ ƒe abi siwo menye tsikpe o dzɔna le dzoxɔxɔ si lolo wu tsikpe sã me, eye zi geɖe la, eƒe dzoxɔxɔ nɔa 0 °C va ɖo 15 °C (32 °F kple 59 °F). Ne wotsɔ amegbetɔ ƒe ŋutigbalẽ si le ƒuƒlu alo esi mexɔ dzo nyuie o la de tsi atraɖii, afɔkpa siwo me tsi le, eye vuvɔ nɔ eŋu atraɖii gaƒoƒo alo ŋkeke geɖe la, ahɔhɔ̃mekawo ƒe dɔwɔwɔ gblẽna vevie evɔ tsikpe ɖeka pɛ hã medzɔna gbeɖe o.

Nu vevi eve siwo ɖea abi si me vuvɔ wɔna si me tsikpe mele o fiana le dɔdamɔnu mee nye chilblains (si wogayɔna le atikewɔnyawo me be pernio alo perniosis) kple trench foot (immersion foot). Chilblains dzena abe ŋutigbalẽ ƒe abi siwo le teƒe ɖeka, siwo le ʋuʋum vevie, siwo me ʋuʋudedi le alo esiwo me ʋuʋudedi le le afɔbidɛwo, asibidɛwo, ŋɔti, alo towo ŋu ene, siwo ʋuka suewo ƒe ʋuʋu si mesɔ o ʋãna ne wogaxɔ dzo. Trench foot nye ahɔhɔ̃mekawo ƒe dɔléle si goglo wu, si le ɖoɖo nu, si dona tso nyɔnyrɔ ɖe afɔkpa sesẽwo me ɣeyiɣi didi alo tsidzadza me, si hea ŋutigbalẽ ƒe ʋuʋu, lãmeka siwo le wo ɖokui si ƒe tsɔtsrɔ̃, vuvɔ ƒe vevesese si nu sẽ si nɔa anyi didi, kple ahɔhɔ̃mekawo ƒe vevesese si nɔa anyi didi vɛ. Dɔlélenutsiŋutete ƒe dɔwɔwɔ si to vovo, dɔdaƒe ƒe ɖoɖo, ƒuƒu ƒuƒu ƒe ɖoɖowo, kple mɔxexe ɖe tsi dzodzoe ƒe dzoxɔxɔ gbugbɔgaxɔ nu vevie gɔmesese kpɔa dɔnɔwo ta tso lãmeka kple ʋukawo ƒe nuwɔametɔnyenye le woƒe agbemeŋkekewo katã me.

Wɔ esia fifia¶

1. Ðe afɔkpa siwo xɔ dzo, soxwo, kple awu siwo me tsi le ɖa enumake. Ne èɖe kadodo tẽ kple avɔ xɔdzo ɖa la, etɔa te fafa si yia edzi le yaƒoƒo me eye wòdzudzɔa ŋutigbalẽ ƒe ʋuʋu vivivi.
2. Gbugbɔ do dzo na afɔ siwo ŋu dɔlélea le vivivi le xɔme ƒe dzoxɔxɔ si sɔ nu. Na abɔwo naxɔ dzo le ya si ƒe dzoxɔxɔ nye 20 °C kple 22 °C dome le mɔ si mewɔa naneke o nu; mèganyrɔ abi siwo mewɔ ɖeka kple vuvɔ o ɖe tsi dzodzoe ƒe tsilelewo me gbeɖe o.
3. Klɔ ŋutigbalẽa kple tufafa si gbɔ eme to adzalẽ fafɛ kple tsi fafɛ zazã me. Klɔ fifia, dɔlékui, kple ɖiƒoƒo siwo ƒo ƒu la ŋu màtutu eŋu o, elabena aɖatsi siwo le ʋuʋum la gbɔdzɔna ŋutigbalẽa, eye tsi yɔe.
4. Tsɔ afɔkpa falɛfalɛ si le dzadzɛ ƒo ŋutigbalẽa be wòaƒu keŋkeŋ. Tsɔ tsi si le eme la tutu ɖa blewu; mègatutu afɔbidɛwo, afɔbidɛwo, alo asibidɛ siwo ŋu dɔlélea le, atutu wo, alo aƒo wo sesĩe gbeɖe o.
5. Do afɔ alo asiwo ɖe dzi vie wu dzi ƒe kɔkɔme. Ne ètsɔ abɔ kple afɔwo ɖo akɔtaɖonu alo avɔ siwo woxatsa dzi la, eɖea ʋu si hea nuheŋusẽ ƒe ƒoƒo dzi kpɔtɔna eye wòɖea vevesese si le ƒoƒom ƒe ʋuʋu dzi kpɔtɔna.
6. Ya ƒo ŋutigbalẽ ƒuƒlu la le ya dzadzɛ si ƒu me hafi nàtsɔ alẽfu sox siwo le dzadzɛ la asisi ɖe wo ŋu. Na abɔ kple afɔ siwo ŋu dɔlélea le la nanɔ xɔme ya si le tsatsam me aɖabaƒoƒo 30 va ɖo 60 ya teti, eye nàkpɔ egbɔ be ŋutigbalẽa ƒu keŋkeŋ hafi nàde afɔkpa siwo me mekɔ o siwo me mekɔ o.

Dɔlélenutsiŋutete ŋuti nunya le abi si menye tsikpe o ŋu le vuvɔ me: vasospasm kple maceration¶

Vuvɔ ƒe abi siwo menye tsikpe o to vovo kura tso vuvɔ me le woƒe nugbagbeŋusẽ ƒe dɔwɔwɔ, ɣeyiɣi didi si woxɔna, kple ahɔhɔ̃mekawo ƒe dɔwɔwɔ ƒe emetsonu siwo nɔa anyi didi me.

flowchart TD
    A["Tsi, Vuvɔ ƒe Agbɔsɔsɔme Ɣeyiɣi Didi (0 °C va ɖo 15 °C / 32 °F va ɖo 59 °F)"] --> B["Ʋukawo ƒe Ʋukawo ƒe Ʋukawo ƒe Teteɖeanyi si Nɔa Anyi"]
    B --> C["Capillary Endothelial Hypoxia & Tsi ƒe sisi"]
    C --> D["Tsi si le lãkusi me & Stratum Corneum Maceration"]
    D --> E{"Dɔdaƒe ƒe Nɔnɔme Si Le Eɖem Ðe Goa?"}
    E -- Superficial Inflammatory Papules --> F["Chilblains (Pernio): Ʋuka suesuesuewo ƒe Ʋukawo ƒe Ʋuʋu"]
    E -- Deep Neurovascular Breakdown --> G["Trench Foot (Immersion Foot): Lãmetsiŋusẽ & Ʋukawo ƒe Tɔtɔ"]
    F --> H["Fafɛ Passive Gbugbɔ Dzoxɔxɔ + Topical Corticosteroid"]
    G --> I["Ya ƒe Ƒuƒoƒo Blewu + Kɔkɔ + Tsi Dzodzoe Ƒo asa na Kpekpeɖeŋu"]
    I --> J["Ɣeyiɣi Didi ƒe Ahɔhɔ̃mekawo ƒe Vevesese & Raynaud Nudzɔdzɔ"]

Microvascular dysfunction kple adedada ƒe nuwɔna ƒe kpododonu¶

Amegbetɔ ƒe ŋutilã ƒe ŋutilã ƒe dɔwɔwɔ nyuie ne vuvɔ wɔe la nyea tsatsam:

Ne ŋutigbalẽ ƒe dzoxɔxɔ ɖiɖi la, lãmeka gbadza siwo le teƒea ƒe ka siwo le ŋutigbalẽ ƒe ʋukawo me la tsia (vuvɔ ƒe ʋukawo ƒe tete) be woaxe mɔ na ʋu vevi si me dzo le be dzoxɔxɔ nagabu to ŋutigbalẽa me o.

Ɣeaɖewoɣi la, lãmeka siwo wɔa dɔ le wo ɖokui si la hea ʋukawo kekena ɣeyiɣi kpui aɖe, si woyɔna be Lewis adedada ƒe nuwɔna (ʋukawo keke si tso vuvɔ me), si tsɔa ʋu dzodzoe ƒua gbe ɖe xexlẽdzesiawo me aɖabaƒoƒo 5 va ɖo 10 be wòana oxygen kple nunyiamewo hafi agate ŋu axe.

Le ame siwo ate ŋu axɔ dɔa bɔbɔe alo le vuvɔ si me tsi le si nɔa anyi didi me la, adedada ƒe nuwɔna la doa kpo nu:

Ŋutilã me ʋukawo gakpɔtɔ le ʋukawo ƒe ʋuʋu sesĩe si nɔa anyi didi me.

Ʋukawo me ʋu ƒe sisi tsia tre ɖe eŋu, si wɔnɛ be oxygen meganɔa ʋukawo ƒe lãkusi kple lãkusi siwo ƒo xlãe me o.

Ʋukawo me lãmenugbagbevi siwo le ʋukawo me la vuvu si me ya mesɔ gbɔ ɖo o, gake ʋuka siwo le ʋukawo me ƒe mast cells kple seselelãme ƒe lãmekawo ƒe nuwuwu va zua amesiwo ƒe lãme sẽna akpa.

Ne wogbugbɔ do dzo na lãkusi si fa la emegbe kaba akpa la, dɔdzẽ ƒe ŋuɖoɖo si mesɔ o la bia:

Ʋukawo kekena zi ɖeka, gake ʋuka siwo le anyime ya gakpɔtɔ le xaxa.

Nyaƒoɖeamenu ƒe masɔmasɔ wɔnuku sia zia tsi, ʋumenugbagbevi dzĩwo, kple dɔdzẽ ƒe cytokines dzi toa ʋuka siwo gblẽ me yia gota yia ŋutigbalẽa me, si wɔnɛ be ʋumenugbagbeviɣidɔ sesẽ, ʋuʋudedi sesẽ, ʋumenugbagbevi dzĩwo, kple ʋuka suesuesuewo ƒe ʋukawo me ʋu sina tona.

Nu gbagbewo ƒe dzɔdzɔmeŋusẽŋununya le epidermal maceration ŋu¶

Trench foot bia be tsi nanɔ anyi eteƒe nadidi. Ne wotsɔ afɔwo de rababa-fɔkpa siwo megbɔa ya o, plastik-wuwo, alo lãgbalẽfɔkpa siwo me tsi le me la, fifia si mate ŋu adzo o la dona le afɔawo ƒe ŋutigbalẽ me:

Fifia ƒe lãkusi siwo ade 250,000 ye le amegbetɔ ƒe afɔ si le lãmesẽ me, si te ŋu ɖea tsi si ade mililita 250 (ounces 8.5) ɖe go gbesiagbe le ŋutilã ƒe agbagbadzedze si sɔ me.

Esi stratum corneum (si nye ŋutigbalẽ me lãmenugbagbevi kuku siwo me keratin yɔ fũu ƒe gota gome) xaxa ɖe afɔkpa siwo me tsi mate ŋu age ɖo o me ta la, exɔa tsi abe ƒumebɔbɔ ene.

Tsi si le ŋutigbalẽ si sɔ me nyea alafa memama 15 va ɖo 20; le tsi si nɔa ame ŋu atraɖii te la, tsi si le eme la wua alafa memama 50, si nye nuwɔna si woyɔna be hyperhydration alo maceration.

Ŋutilã si wotsɔ lãgbalẽ wɔe la zua ɣie ŋutɔ, evuvu, eƒona, eye wòƒoa nu goglo.

Lãmenugbagbeviwo dome ami ƒe kadodo ŋutɔŋutɔ siwo tsɔa siminti keratinocytes ƒoa ƒui la lɔ̃na, si wɔnɛ be ŋutigbalẽ ƒe mɔxenu la megakpɔa ŋusẽ le eƒe wɔwɔme ƒe tete ŋu o.

Ʋuʋudedi si le afɔkpaa me la lãa lãkusi si fa la ɖa le papillary dermis si le ete ŋu, si ʋua do suesuesue siwo kpea fungi kple dɔlékuiwo ƒe dɔlékui siwo va dzea wo dzi (abe cellulitis, wet gangrene, kple trench foot ulcers ene).

Chilblains (pernio): dɔdaƒe ƒe ɖeɖefia kple edzikpɔkpɔ¶

Chilblains (pernio alo perniosis) tsi tre ɖi na ŋutigbalẽ ƒe abi siwo xɔa dzo vevie alo esiwo nɔa anyi didi siwo ahɔhɔ̃mekawo ƒe dɔwɔwɔ si mesɔ o hena vuvɔ si me tsikpe le si me tsikpe mele o hena vɛ. Wogblẽa nu le gotadɔwɔlawo, todzidelawo, asrafowo, kple ame ɖekaɖeka siwo ŋu dɔlélenutsiŋutete ƒe dɔléle siwo le wo ɖokui si alo ʋu ƒe sisi nyuie le gota gome ŋu zi geɖe.

Chilblains (Pernio) Anatomical Distribution:
--------------------------------------------------------------------------------
Primary Sites:    Dorsal surfaces of toes, fingertips, heels, ears, nose.
Visual Appearance: Erythematous (bright red) to violaceous (purple) swollen papules.
Key Symptoms:     Intense itching, burning pain upon rewarming, localized edema.
Distinction:      Skin remains soft and pliable; NO hard wooden freezing.
--------------------------------------------------------------------------------

Dɔnɔdzikpɔƒe ƒe dzesiwo kple dzesi siwo le chilblains ŋu¶

Chilblains va dona le gaƒoƒo 2 va ɖo 14 me le ya fafɛ si xɔ dzo megbe:

• Erythematous to violaceous papules. Abiawo dzea egɔme abe abi dzĩ siwo le vovo, siwo vuvu, siwo trɔna kabakaba zua aɖabɛ alo violaceous nodules siwo do viviti. Wodzena zi geɖe le afɔbidɛwo ƒe megbekpawo, afɔwo ƒe axawo, asibidɛwo ƒe nugbɔ, ŋɔti ƒe tɔdzisasrã, kple tomekawo dzi.
• Ŋkuʋuʋu sesẽ (ʋuʋudedi) kple vevesese si le dzo dam. Chilblains ƒe dzesi si ɖe dzesi enye ʋuʋudedi sesẽ si nu sẽna ɖe edzi ŋutɔ ne amea ʋu yi xɔ si me dzoxɔxɔ le me alo ge ɖe aba si me dzoxɔxɔ le dzi. Esi ʋu le sisim ɖe ʋuka siwo me ʋu sina tona me la, ʋuʋudedi va xɔa dzobibi goglo siwo le ƒoƒom la teƒe.
• Blistering kple ulceration le nɔnɔme sesẽwo me. Le pernio sesẽ alo esi gbugbɔna me la, edema sesẽ si le teƒe ɖeka kɔa lãkusia ɖe dzi, si wɔnɛ be ʋuʋudedi sue siwo me kɔ siwo me teteɖeanyi le. Ne wowɔ ʋuʋudedi la, ʋuʋudedi siawo gbãna, si wɔnɛ be abi siwo me goglo o, siwo le veve sem, siwo hayana blewu, siwo te ŋu xɔa staphylococcal dɔlékui evelia bɔbɔe.

Kpekpeɖeŋu gbãtɔ kple atikewɔwɔ na chilblains¶

Chilblains dzi kpɔkpɔ ku ɖe ahɔhɔ̃mekawo ƒe dɔwɔwɔ si mesɔ o ƒe fafa kple ŋutigbalẽ si gblẽ ta:

1. Gbugbɔ do dzo na ŋutigbalẽa le mɔ si mewɔa naneke o nu. Ʋu yi xɔ me yi xɔ si me dzoxɔxɔ le bɔbɔe (20 °C va ɖo 22 °C / 68 °F va ɖo 72 °F). Na ŋutigbalẽa naxɔ dzo le dzɔdzɔme nu. Mègatsɔ chilblains da ɖe radiator, elektrik dzoxɔxɔnamɔ̃, alo dzodoƒe si le ʋuʋu ɖi gbɔ gbeɖe o, eye mègatsɔe de tsi dzodzoe me gbeɖe o, elabena dzoxɔxɔ si nu sẽ kabakaba la nana ʋuʋudedi kple dɔdzẽ ƒe ʋuʋu nu sẽna ɖe edzi.
2. Ƒo asa na ʋuʋudedi kple ʋuʋudedi ɖesiaɖe. Chilblains ƒoƒo ɖea lãkusi tsɛ si le papules dzi la vuvu, si wɔnɛ be abi siwo le ʋuʋu ɖi eye dɔlékuiwo va nɔa wo me. Na asibidɛwo nanɔ kpuie eye nàtsɔ kotoklobo alo alẽfu si me mekɔ o atsyɔ wo dzi.
3. De corticosteroid-tike si wotsɔna ƒoa tsii ɖe lãme. Corticosteroid si ƒe ŋusẽ sɔ ɖe lãme na ame (abe hydrocortisone 1 le alafa me alo triamcinolone acetonide 0.1 le alafa me ene) zazã zi eve gbesiagbe ɖea ʋuka siwo me ʋu sina tona ƒe dɔdzẽ si le teƒe ɖeka dzi kpɔtɔna, eɖea ʋuʋudedi dzi kpɔtɔna, eye wòɖea ʋuʋudedi dzi kpɔtɔna.
4. Takpɔkpɔ tso afɔkpawo ƒe ʋuʋu me. Ne ele be dɔnɔa nado afɔkpa la, tsɔ hydrocolloid blister bandage alo silicone gel toe sleeve sisi ɖe abiawo dzi be wòaxe mɔ na nodules la be mɔ̃ nagatutu wo o.
5. Atikewɔwɔ si wowɔ ɖe ɖoɖo nu na dɔléle siwo nɔa anyi didi alo esiwo melɔ̃na o. Le dzomeŋɔli ƒe chilblains sesẽ siwo gbugbɔna me la, ɖɔktawo ate ŋu aŋlɔ calcium channel blockers siwo woano (abe nifedipine, 20 mg va ɖo 60 mg gbesiagbe ene). Nifedipine naa ʋukawo ƒe lãmeka si le gbadzaa la ɖea dzi ɖi, enaa ʋuka siwo le gota la kekena, eye wònaa abi siwo me ʋuʋudedi le siwo nɔa anyi didi la nu yina kabakaba.

Trench foot (immersion foot): the four clinical stages¶

Trench foot (immersion foot) is a far more destructive clinical condition than chilblains. It represents a combined neurovascular crush and ischemic injury affecting the deep tissues of the feet. First recognized on a massive scale among soldiers standing in waterlogged trenches during World War I, trench foot remains a constant hazard among modern soldiers, hikers, unhoused populations, and disaster survivors trapped in floodwaters.

Trench foot progresses through four distinct physiological stages, each requiring specific first aid and clinical management.

flowchart TD
    A["Stage 1: Pre-Hyperemic (Ischemic)"] -->|Slow Passive Room Air Warming| B["Stage 2: Hyperemic (Reperfusion Inflammatory)"]
    B -->|Elevation, Bed Rest, Pain Management| C["Stage 3: Post-Hyperemic (Chronic Neuropathic)"]
    C -->|Long-Term Nerve Recovery: 6 to 24 Months| D["Stage 4: Permanent Sequelae / Raynaud / Autonomic"]

Stage 1: The pre-hyperemic (ischemic) stage¶

The pre-hyperemic stage occurs during the cold, wet exposure phase and immediately following rescue:

The foot is cold, swollen, pale, cyanotic, or mottled gray.

The skin feels clammy and waterlogged, showing deep, white, pleated maceration folds along the plant surface and between the toes.

Peripheral arterial pulses (dorsalis pedis and posterior tibial) are exceptionally weak or completely impalpable due to intense arteriolar spasm.

Sensation is profoundly diminished. The patient describes the foot as feeling heavy, dead, or like "walking on wooden pegs." Tactile sensation, light touch, and pinprick response are completely absent across the toes and distal forefoot.

Damage during this stage is centered on endothelial cell swelling, microvascular stasis, and early axonal degeneration in peripheral sensory and autonomic nerve fibers.

Stage 2: The hyperemic (inflammatory reperfusion) stage¶

The hyperemic stage begins hours after the foot is removed from the cold and warmed to room temperature. It represents an explosive inflammatory reperfusion reaction that lasts from several days to several weeks:

Afɔa trɔna zua eƒe nugbɔ si le dzo dam vevie, si ƒu, eye wòle dzo dam. Peripheral pulses va zua blibo, liƒo, kple hyper-dynamic.

Edema gã aɖe va dona, si wɔnɛ be afɔ, afɔkpodzi, kple afɔkpodzi ƒe akpa si le ete vuvuna va ɖoa woƒe lolome si sɔ ƒe teƒe eve.

Ʋuʋudedi gã siwo me ʋuʋudedi le siwo yɔ fũ kple tsi si me ʋu sina tona alo ʋu si dona le lãme na ame la kɔa ŋutigbalẽ si wotsɔ ƒo ƒui la ɖe dzi. Ŋutilã si le etame ƒe akpa aɖewo ƒuna, si wɔnɛ be ŋutigbalẽ ƒuƒu siwo le avi fam la dzena.

Vevesese sesẽ si le veve sem la dzea egɔme Dɔnɔwo ƒo nu tso vevesese sesẽ, si le bibim, si le ƒoƒom kple elektrikŋusẽ ƒe ʋuʋu kpata (tudada ƒe vevesese) si ɖoa sesẽme, vevietɔ le zã me ŋu.

Pain during this stage is caused by chemical inflammation irritating regenerating sensory nerve endings and acute reperfusion hyperemia stretching ischemic tissue beds.

Stage 3: The post-hyperemic stage¶

The post-hyperemic stage develops as the acute inflammation and bounding hyperemia subside, typically lasting from 2 to 12 months:

Swelling and redness gradually resolve, and blisters dry into hard crusts.

However, the foot remains profoundly abnormal. The skin becomes cold, pale, and hypersensitive to temperature changes.

Hyperhidrosis (excessive, cold perspiration) develops due to damaged sympathetic autonomic nerve fibers that uncontrollably trigger sweat glands.

Patients suffer chronic, intractable neuropathic pain, characterized by allodynia (pain caused by non-painful stimuli, such as a bedsheet brushing against the toes) and cold intolerance. Walking even short distances causes deep, aching bone pain and severe fatigue.

Stage 4: Permanent chronic sequelae¶

In severe cases of trench foot where exposure exceeded 48 to 72 hours, permanent structural and functional disabilities remain for life:

Extensive loss of peripheral unmyelinated and myelinated nerve axons leads to permanent sensory neuropathy and patchy numbness.

Secondary Raynaud phenomenon occurs, where mild exposure to cool air triggers sudden, painful digital blanching and cyanosis.

Patients experience premature osteoarthritis in the small joints of the foot, muscular atrophy in the intrinsic foot muscles (causing hammer toes and pes cavus deformities), and persistent hyperhidrosis that increases susceptibility to recurring fungal and bacterial infections.

Nusiwo wotsɔ ƒua gbe blewu kple xɔme ƒe dzoxɔxɔ gbugbɔgaxɔ ƒe ɖoɖowɔɖi¶

Alesi wowɔa abi siwo woxɔna le vuvɔ me siwo menye tsikpe o ƒe dɔdamɔnu to vovo kura tso vuvɔŋɔli gbɔ. Togbɔ be vuvɔ bia be woagaxɔ dzo kabakaba, sesĩe le tsi si ƒe dzoxɔxɔ nye 37 °C va ɖo 40 °C (99 °F va ɖo 104 °F) me be tsikpe ƒe kristalo nafa kabakaba hã la, wotsi tre ɖe abi siwo vuvɔ mewɔna o ƒe dzoxɔxɔ kabakaba ŋu kura.

Ne wotsɔ trench foot alo chilblain de tsi dzodzoe me la, enaa ʋu si dona le ʋuka suewo me kpata, si nana ʋuka suewo ƒe tsɔtsrɔ̃ gasẽna ɖe edzi, ehea ahɔhɔ̃mekawo ƒe vevesese si womate ŋu ado dzi atsɔ o vɛ, enaa ʋuʋudedi kabakaba, eye wònana lãmeka siwo ƒe titrime bliboa nana.

Afɔɖeɖe ɖesiaɖe non-freezing vuvɔ gbugbɔgaxɔ kple beléle¶

Wɔ ɖe dɔdamɔnu sia dzi ne èle trench foot alo chilblains dzi kpɔm:

1. Trɔ yi bebeƒe si me tsi mele o eye yame fa miamiamia. Ʋu dɔnɔa yi xɔ si le xɔ me alo agbadɔ si me wolé be na xɔme ƒe dzoxɔxɔ si sɔ, si me wofa le: 20 °C va ɖo 22 °C (68 °F va ɖo 72 °F).
2. Ðe afɔkpa kple awu siwo katã xɔ dzo la ɖa nyuie. Ðe afɔkpawo ƒe ka ɖa keŋkeŋ. Mègahe afɔkpawo alo aʋuʋu wo le afɔ siwo tsi yɔ fũu la dzi gbeɖe o. Tsɔ aŋekotoku lã soxle xɔdzowo ne wolé ɖe ŋutigbalẽ si fa eye wòle ʋeʋẽm ŋu.
3. Tsɔ adzalẽ fafɛ si wua dɔlékuiwo klɔe blewu. Klɔ afɔ alo asiwo to tsi fafɛ (si ade 25 °C va ɖo 30 °C / 77 °F va ɖo 86 °F) kple adzalẽ fafɛ si me dɔlékuiwutike mele o zazã me. Mègatutu avɔ siwo ƒe amadede le ƒuƒuie alo azã wo o.
4. Tsɔ afɔkpa falɛfalɛwo tutue keŋkeŋ. Tsɔ kotoklobo alo microfiber afɔkpa dzadzɛ falɛfalɛwo ƒo ŋutigbalẽa blewuu wòaƒu. Lé ŋku ɖe teƒe siwo le afɔbidɛawo dome (teƒe siwo le web me) ŋu nyuie, afisi tsi si xaxa la dzia maceration kple fungal dɔlékuiwo le. Mègatutu ŋutigbalẽa yi ŋgɔ kple megbe gbeɖe o.
5. Na afɔawo nate ŋu aƒu gbe le ya me. Na afɔ ƒuƒluawo nanɔ xɔme ya dzadzɛ si le tsatsam me aɖabaƒoƒo 30 va ɖo 60 ya teti. Ya ƒe dodo nana tsi meganɔa ŋkume ƒe akpa si tsi yɔ fũu la ŋu, wòsẽna ɖe edzi, eye wògaɖoa eƒe dzɔdzɔme mɔxenu si kpɔa ame ta la ake.
6. Do afɔ siwo le ete la ɖe dzi. Tsɔ afɔawo ɖo akɔtaɖonuwo alo alɔ̃kotoku siwo woxatsa dzi ale be afɔawo nagbɔ ɖe eme sentimeta 15 va ɖo sentimeta 30 (inch 6 va ɖo 12) tso dzia ƒe kɔkɔme dzi. Ne wodoe ɖe dzi la, eɖea ʋuka siwo me tsi le ƒe nyaƒoɖeamenu dzi kpɔtɔna, eɖea dɔdzẽ ƒe ʋuʋu dzi kpɔtɔna, eye wòɖea vevesese si le ƒoƒom dzi kpɔtɔna.
7. De alẽfu ƒuƒu alo sox siwo wotsɔ lãfu wɔ siwo me mekɔ o siwo me mekɔna o la ŋu. Ne ŋutigbalẽa nya ƒu nyuie eye wòsẽ ko la, do soxle dzadzɛ siwo ƒu, siwo me mekɔ o siwo wotsɔ merino-lãfu alo lãfu si wotsɔ lãfu wɔe si le dziƒoxɔ kɔkɔ dzi. Mègazã compression sox siwo sesẽ eye woate ŋu abla, siwo xea mɔ na microvascular arterial perfusion gbeɖe o.
8. Maintain absolute bed rest during Stage 2 hyperemia. Never allow a patient with hyperemic, blistered trench foot to walk or bear weight on their feet. Walking crushes devitalized plantar capillaries and causes extensive dermal shear injuries.

+-----------------------------------------------------------+
|          NON-FREEZING COLD CARE SAFETY RULES              |
|                                                           |
|  [.] REWARM SLOWLY at room temperature (20 °C to 22 °C)   |
|  [.] PAT DRY GENTLY; never scrub or massage softened skin |
|  [.] AIR-DRY BARE FEET for 30 to 60 minutes               |
|  [.] ELEVATE FEET above heart level to control swelling   |
|  [.] NEVER USE HOT WATER BATHS; hot water causes necrosis |
|  [.] STRICT BED REST during acute hyperemic swelling      |
+-----------------------------------------------------------+

Prevention protocols: foot discipline and gear management¶

Woate ŋu axe mɔ ɖe abi siwo woxɔna le vuvɔ me si menye tsikpe o nu keŋkeŋ to ame ŋutɔ ƒe dzadzɛnyenye sesẽ, tsidzadza dzi kpɔkpɔ adãtɔe, kple gear ƒe ɖoɖo siwo ŋu woɖɔ ɖo me. Asrafowo ƒe dɔwɔƒe siwo le xexeame godoo to dɔwɔwɔ ƒe ɖoɖo siwo de blibo le vuvɔŋɔli siwo ŋu wotrɔ asi le be woatsɔ aɖe do siwo me woɖea do le le agblea dzi ɖa.

Soklo etɔ̃ ƒe tɔtrɔ ƒe ɖoɖoa¶

Afɔ ƒe tsidzadza dzi kpɔkpɔ bia be woatrɔ soxwo vevie gbesiagbe:

Ele be gotadɔwɔlawo, todzizɔlawo, kple dzomeŋɔli todzizɔlawo natsɔ alẽfu si me wodea amii alo soxle siwo wotsɔ lãfu wɔe siwo tsia tsi nu la eve ya teti ɖe asi:

• Atsu kple asi 1: Wodonɛ ɖe afɔwo dzi le afɔkpaawo me le mɔzɔzɔ alo dɔwɔwɔ vevie me.
• Atsu kple asi 2: Atsu kple asi dzadzɛ siwo ƒu abe ƒu ene siwo wodzra ɖo ɖe akplo ƒuƒu si me tsi mate ŋu age ɖo o me, si wodzra ɖo ɖi koŋ na alɔ̃dɔdɔ le asaɖa me.
• Pair 3: Spare pair drying inside your jacket against your body heat or hanging from your pack.

Mègado sox ɖeka ma ke gbeɖe o hena gaƒoƒo 12 kple edzivɔ ƒe ʋuʋu atraɖii. Trɔ wòzu sox yeye si ƒu le ŋdɔ me. Ðe atsu kple asi siwo xɔ dzo la ɖa, nàmi fifia, eye nàtsɔ wo ade wò awu ememetɔwo me afisi wò ŋutilã ƒe dzoxɔxɔ ana woaƒu le le ŋdɔ me.

Afɔdzidede kple mɔxenu siwo xea mɔ na tsidzadza¶

Afɔwo dzi kpɔkpɔ gbesiagbe le ŋutilã me xea mɔ na ŋutigbalẽ ƒe mɔxenu la be wòagagbã o:

Wash and dry feet daily. Every evening, wash feet thoroughly with clean water, dry meticulously between every toe, and allow bare feet to air-dry for at least 30 minutes before putting on dry sleep socks.

Apply moisture-absorbing foot powders. Dusting the feet with non-medicated talc powder or foot powder containing zinc oxide, aluminum chlorohydrate, or cornstarch absorbs active perspiration and keeps the skin dry.

Use antiperspirant sprays or roll-ons. Applying clinical-strength aluminum chloride antiperspirant to the soles of the feet once daily for three to five days before cold-weather expeditions reduces foot perspiration by more than 50 percent, preventing epidermal maceration.

Barrier creams and petrolatum. In extreme wet-cold conditions where boots will inevitably be soaked, applying a thin coating of dimethicone-based barrier cream or medical-grade petroleum jelly (petrolatum) to the toes and soles creates a hydrophobic barrier that prevents external water from penetrating into the stratum corneum.

Proper footwear sizing and boot selection¶

Footwear mechanics play a massive role in non-freezing cold injuries:

Never wear tight boots. Boots that fit snugly in warm weather become dangerous in the cold. Wearing thick winter socks inside tight boots compresses the dorsal pedis artery, chokes off microcirculation, and accelerates tissue ischemia.

Size winter boots one-half to one full size larger than standard street shoes. This creates an open dead-air space around the foot, permits unrestricted capillary blood flow, and allows room for thick insulating wool socks without binding.

Choose breathable, waterproof membrane boots for active cold weather (such as Gore-Tex or eVent). For continuous, standing water or slush, use dual-layer pac boots with removable felt or synthetic liners.

Dry boot liners nightly. Never sleep with wet boot liners inside frozen boots. Remove felt or wool liners from the boot shells and sleep with them inside your sleeping bag against your torso to make sure dry, warm footwear the following morning.

International clinical guidelines and occupational cold standards¶

Non-freezing cold injuries are subject to formal diagnostic standards, military medical doctrines, and occupational health regulations across international jurisdictions.

United States: DoD, OSHA, and NIOSH occupational standards¶

In the United States, non-freezing cold injuries are regulated under Department of Defense (DoD) military operational standards and Occupational Safety and Health Administration (OSHA) guidelines:

The U.S. Army Public Health Center enforces Technical Bulletin Medical 505 (TB MED 505: Prevention and Management of Cold-Weather Injuries), establishing strict mandatory daily foot inspections, sock-changing regimens, and maximum standing exposure times in wet environments.

OSHA cold stress guidelines require employers in agriculture, construction, and maritime industries to provide warm, dry break areas, enforce footwear changes, and monitor workers for early symptoms of chilblains and immersion foot.

Medical evaluation and emergency dispatch across the United States are accessed by calling 911.

United Kingdom: Ministry of Defence and NHS clinical guidance¶

The United Kingdom holds a comprehensive body of clinical research on non-freezing cold injury, driven by British military experience in the Falklands War and Northern European training exercises:

The UK Ministry of Defence (MoD) enforces Joint Service Publication 539 (JSP 539: Climatic Injuries in the Armed Forces), classifying NFCI as a reportable military casualty. British military protocols mandate that any service member exhibiting numb, pale feet after wet-cold exposure be placed on immediate duty restriction, provided with room-temperature rewarming, and evaluated by medical officers.

The National Health Service (NHS) provides specialized regional thermal clinics that use infrared thermography and thermal sensory testing to quantify permanent autonomic nerve damage and manage chronic post-NFCI neuropathic pain. Emergency services across the UK are reached via 999 or 112.

Canada: Canadian Forces and Canadian Centre for Occupational Health¶

In Canada, cold injuries are monitored under National Defence guidelines and the Canadian Centre for Occupational Health and Safety (CCOHS):

Canadian Forces Health Services instructions emphasize rapid field identification of pernio and immersion foot during sub-arctic and coastal operations.

Occupational health codes mandate that workers exposed to cold, wet environments receive waterproof thermal footwear with puncture-resistant soles and non-absorbent insulating linings compliant with CSA Standard Z195. Emergency assistance is reached across Canada by dialing 911.

Australia: Safe Work Australia and military high-country doctrine¶

In Australia, non-freezing cold injuries are overseen by Safe Work Australia and the Australian Defence Force (ADF):

Agricultural workers in southern wet-winter regions (Tasmania, Victoria) and military personnel operating in the High Country training areas are subject to occupational cold-stress risk assessments.

Safe Work Australia codes of practice require employers to provide insulated, waterproof gumboots, thermal socks, and warm drying rooms for workers in wet, cold processing plants and outdoor facilities. In emergencies, Australians dial 000.

Nya siwo wobiaa amewo enuenu¶

Can you get trench foot if the temperature is not freezing?¶

Yes. Trench foot does not require freezing temperatures. It develops in non-freezing damp conditions typically ranging from 0 °C to 15 °C (32 °F to 59 °F). When feet remain enclosed inside wet, damp boots for 12 hours or more, continuous capillary constriction, tissue oxygen deprivation, and skin maceration cause deep neurovascular and tissue damage without any ice forming in the flesh.

Why is hot water dangerous for someone with trench foot or chilblains?¶

Placing non-freezing cold injuries into hot water causes sudden, massive blood vessel dilation in tissues that have already suffered capillary damage. This abrupt surge of blood causes intense inflammatory swelling, accelerates blistering, produces excruciating neurovascular pain, and can cause tissue necrosis. Non-freezing cold injuries must always be rewarmed slowly at normal room temperature.

How can I tell the difference between chilblains and frostbite?¶

Chilblains occur in temperatures above freezing and present as swollen, itchy, reddish-purple inflammatory bumps on toes, fingers, or ears that remain soft and pliable to the touch. Frostbite occurs in sub-freezing temperatures and involves actual tissue freezing, causing the skin to feel waxy, hard, and wooden, followed by complete numbness and large fluid-filled blisters upon thawing.

How long does it take for trench foot to heal completely?¶

Mild cases caught in the early pre-hyperemic stage can resolve within a few days of dry, warm rest. However, moderate to severe trench foot that has entered the hyperemic and blistered stages typically requires two to twelve months to heal. In severe cases with extensive nerve and capillary destruction, patients suffer permanent nerve damage, cold hypersensitivity, and chronic pain for life.

What is the best way to dry waterlogged, macerated feet in the field?¶

Remove wet boots and socks immediately, wash the feet gently with mild soap and lukewarm water without scrubbing, and pat them dry with a clean towel. Allow the bare feet to air-dry in circulating room-temperature air for at least 30 to 60 minutes so the softened skin can firm up. Elevate the feet to reduce swelling, and put on loose, dry wool socks once completely dry.

Kpekpeɖeŋunana gbãtɔ ƒe ɖaseɖigbalẽ¶

Recognizing and treating non-freezing cold injuries like chilblains and trench foot requires practical knowledge of environmental medicine, skin barrier physiology, and gentle wound care. Learning how to distinguish non-freezing trauma from deep frostbite, avoiding dangerous rapid-heating mistakes, and executing proper field drying and splinting can prevent permanent neurovascular disability in outdoor workers, hikers, and disaster survivors.

We strongly encourage everyone who works outdoors, participates in winter recreation, or leads outdoor groups to complete accredited certification in wilderness first aid (WFA) or standard first aid and cardiopulmonary resuscitation (CPR). Recognized providers such as the American Red Cross, St John Ambulance, the British Red Cross, and the Canadian Red Cross provide comprehensive training in environmental cold injury prevention, maceration management, and trauma first aid.

Wolé ŋku ɖe dzɔtsoƒewo ŋu¶

• Wilderness Medical Society (WMS, United States): Dɔdaƒe ƒe Dɔwɔwɔ Ŋuti Mɔfiame Siwo Ku Ðe Mɔxexe Ðe Abi Siwo Mexɔa Dzomeŋɔli o Nu Kple Wo Dada Ŋu.
• U.S. Army Public Health Center (United States): Technical Bulletin Medical 505: Prevention and Management of Cold-Weather Injuries.
• UK Ministry of Defence (United Kingdom): Joint Service Publication 539: Climatic Injuries in the Armed Forces: Non-Freezing Cold Injury.
• National Health Service (NHS, United Kingdom): Clinical Guidance on Chilblains (Pernio) and Chronic Thermal Injuries.
• Canadian Centre for Occupational Health and Safety (CCOHS, Canada): Cold Weather Workers Safety and Immersion Foot Guidance.
• Safe Work Australia (Australia): Managing the Risks of Working in Extreme Climatic Conditions: Cold Stress.

Mɔfiame siwo do ƒome kplii¶

• Hypothermia and frostbite emergency treatment
• Frostbite staging, tsi dzodzoe nyɔnyrɔ̃, kple afɔku siwo le tsikpe me ake
• Shock recognition and management in trauma
• Dzomeŋɔli ƒe ahomwo kple ahomya sesẽwo ƒe agbetsitsi ƒe ɖoɖowo
• Xexlẽdzesi siwo woxɔna kpata le dukɔwo nu