Podoconiosis: preventing and managing ‘mossy foot’

Podoconiosis — “mossy foot” — is a long-term swelling of the lower legs that affects at least a million Ethiopians, mostly in the highlands of Amhara, SNNPR, Oromia, and Tigray. It comes from walking barefoot on red volcanic clay soil over many years. The soil irritates the skin, and tiny mineral particles enter through cuts and cracks, blocking the lymph vessels.

It is not caused by worms (that’s a different condition called lymphatic filariasis). It is not contagious. It runs in families because the family shares the same soil, not because of genetics alone.

The good news: shoes prevent it entirely. Daily foot care manages it when it already exists.

On this page

• Who gets podoconiosis
• The five stages
• Prevention — shoes and clean feet
• Managing an established case
• Acute attacks — when the leg suddenly gets worse
• Surgery — for nodules
• Where to get help

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Who gets podoconiosis

You are at risk if:

• You live or work in the Ethiopian highlands (above 1500 metres)
• You walk barefoot on red volcanic soil regularly
• You farm without boots
• You are between 15 and 60 years old
• A family member has it (same soil exposure, plus a genetic susceptibility)

Podoconiosis rarely affects town dwellers who wear shoes from childhood. Rural farmers who inherited farmland with volcanic soil are the most affected.

The five stages

Stage 1 — Reversible swelling

• Mild swelling of the foot
• Goes down overnight when the leg is raised
• Skin still looks normal

Stage 2 — Not fully reversible

• Swelling persists to some extent even after resting
• Foot may itch, burn, or feel heavy

Stage 3 — Nodular disease

• Firm bumps (nodules) develop on the skin
• Skin thickens
• Swelling is now permanent

Stage 4 — Elephantiasis

• Marked leg enlargement
• Skin is thick, warty, cracked
• “Mossy” appearance
• Walking becomes difficult

Stage 5 — Massive disability

• Deformed, immobile leg
• Frequent skin infections
• Painful acute attacks (see below)
• Unable to work

Early stages can be managed back to near-normal with the routine below. Later stages can be stabilised — even improved — but not fully reversed.

Prevention — shoes and clean feet

The disease is 100% preventable.

::: doList

Do — starting today

• Wear closed shoes whenever walking outside, especially on soil
  • Children need shoes from the age they start walking on soil
  • Rubber boots or plastic shoes are cheap and effective
• Wash feet daily with soap and clean water — before bed
• Dry between the toes
• Cover any cut, blister, or crack with a clean cloth
• Wash socks and clean shoes weekly
• Keep floors of the house clean of soil
• Children should not play barefoot in the yard :::

Managing an established case

For anyone who already has swelling, the goal is: stop it getting worse, reduce swelling, prevent infections.

::: doList

The daily routine — do all of these, every day

Morning:

• Wash both feet and legs with soap and clean water
• Rinse very thoroughly
• Dry completely, especially between toes and in skin folds
• Apply a simple emollient (petroleum jelly, moisturising oil) if skin is dry
• Put on clean socks and closed shoes

Evening:

• Repeat washing and drying
• Rest with legs elevated above heart level for 30-60 minutes
• Check for cuts, blisters, cracked skin — treat immediately
• If a nodule looks red or hot — see the health post

Weekly:

• Trim toenails straight across
• Wash socks and clean the insides of shoes

Bandaging (from stage 3 onwards):

• Wrap the leg from toes upward with a firm elastic bandage in the morning
• Apply gentle, consistent pressure
• Remove at night for washing
• Community health workers in trachoma-endemic areas are trained in this — ask for a demonstration :::

::: dontList

Don’t

• Do not walk barefoot outside — even briefly
• Do not ignore small skin cracks — each one is an entry point for bacteria
• Do not wear tight shoes that cause pressure sores
• Do not use harsh soap or scrubs — the skin is fragile
• Do not soak feet in traditional preparations — some contain irritants that trigger acute attacks
• Do not stop the daily routine when the leg looks better — daily care is lifelong :::

Acute attacks — when the leg suddenly gets worse

People with podoconiosis have acute attacks — sudden episodes where the leg becomes red, hot, swollen, and painful, often with fever. These are usually caused by bacterial infection getting into the damaged lymph system.

::: urgentAdvice severity=“urgent”

Urgent — go to the health post today if:

• The leg becomes red, hot, or swollen suddenly
• You develop a fever
• The leg is more painful than usual
• You feel unwell or weak
• Any cracked or broken skin looks infected (pus, spreading redness)

Treatment: antibiotics (usually a course of penicillin or similar). Rest with leg elevated. Continue the daily washing routine. Attacks resolve in a few days with treatment — untreated, they damage more lymph tissue and worsen the swelling permanently. :::

Each acute attack damages the leg further. Getting antibiotics quickly and preventing infections between attacks is what preserves function.

Surgery — for nodules

At stage 3, small firm nodules on the leg can be surgically removed. This is done at some referral hospitals and by trained community surgeons in podoconiosis-endemic areas.

Nodule removal:

• Small procedure under local anaesthetic
• Cheap; sometimes free through NTD programmes
• Reduces skin thickening and improves foot function

It does not cure podoconiosis but makes daily management easier and shoes fit better.

Where to get help

• Health post — for daily care advice and acute attacks
• Woreda health centre — for training on bandaging and skin care
• Referral hospital — for surgical assessment
• Mossy Foot Association (Wolaita area), International Orthodox Christian Charities (IOCC) — dedicated podoconiosis clinics that provide free shoes, training, and community support in endemic areas
• Footwork — international support and advocacy

Ethiopian MoH’s Neglected Tropical Diseases programme has integrated podoconiosis care into primary health services in endemic areas. Ask at any health post — if they don’t manage it locally, they will refer you to a nearby dedicated clinic.

What families can do together

• Get everyone in the family wearing shoes, especially children
• If one member has podoconiosis, others in the family are also at risk (same soil exposure) — assess everyone
• Share the daily foot-care routine — it becomes normal life
• Do not shame or hide affected relatives — podoconiosis carries stigma but the person did nothing wrong; they walked on soil to feed the family
• Support each other in maintaining the routine — it’s more sustainable together

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Reviewed by Dr. Hanna Alemayehu, MD, MPH — Family medicine, Addis Ababa

Sources: WHO Podoconiosis publication 2020; Ethiopian MoH National Master Plan for Neglected Tropical Diseases 2021-2025; Footwork community-based control documentation.

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Draft notes: ~1200 words · grade 6 · isTimeCritical false (chronic condition) but urgentAdvice used for acute attacks · Ethiopian context: red volcanic soil (specific cause), highland regions named, Mossy Foot Association + IOCC + Footwork organizations, integrated NTD programme, addresses stigma explicitly · This is an Ethiopian-specific health issue rarely covered by other global health sites.