Epidermodysplasia Verruciformis (EV) in simple terms

This is a rare skin disorder known as Epidermodysplasia verruciformis in which the body fails to keep at bay a specific kind of the human papilloma virus. These are usually lengthy, warty or scaly patches on the skin which may appear in early childhood. They also cause a higher risk of skin cancer on skin which has been exposed to the sun.

It is sometimes known as Lewandowsky-Lutz dysplasia, an EV. In the normal population, HPV is prevalent, but in the case of Epidermodysplasia Verruciformis, the skin's immune response is defective. This defective response permits the survival of certain viruses which it would otherwise repel.

This article is for educational purposes only, and should not be used as a substitute for consultation with a qualified dermatologist. When growths or warts are continuing to appear and spread, it is advisable to get in touch with a dermatologist right away. Particular attention should be paid if sores are either bleeding or will not heal.

How rare is EV?

E.V. is a condition which is uncommon. The occurrence rate is estimated in the literature to be 1 in one million, but such statistics can be uncertain as many cases get misdiagnosed at an early stage or are undiagnosed.

What does EV look like? Common symptoms and signs

The classic presentations of EV are eye divergent, where the eyes are widely spaced, eye convergent, where the eyes are spaced closer than average, or epicanthic fold where the upper eyelid creases over the eyeball, as seen in the populations of the Far East.

1. Flat wart-like bumps (plane warts)

They appear as small, flat, often skin coloured, pink or brown bumps. These are common on the face, neck, hands and feet.

2. Pityriasis versicolor–like patches

The skin condition may look like a fungal infection such as tinea versicolor. Small scaly patches typically appear on the torso which could be both a lighter and darker skin tone than the rest of the body.

3. Seborrheic keratosis–like or psoriasis-like plaques

Lesions of early vascular eczema can sometimes appear in the form of raised, thicker areas on the skin which may resemble other common skin conditions.

4. When do symptoms start?

These conditions often become apparent during the early teenage years or even in childhood.

What causes epidermodysplasia verruciformis?

Epidermodysplasia Verruciformis is caused by an abnormality in the way that the skin reacts to the virus which causes the condition. This is a genetic predisposition and people only get the disease when they come into contact with the human papilloma virus, specifically a form of the virus known as beta virus.

The genetics: “keratinocyte immunity” and the EVER/CIB1 pathway

A great many cases of inherited familial Early-onset EV are caused by mutations in genes including:

• TMC6 (EVER1)
• TMC8 (EVER2)
• CIB1

Human skin cells contain genes which code for proteins involved in an intrinsic immune response to papillomaviruses. When this pathway is disrupted, beta-HPVs may persist and cause chronic lesions.

Is EV contagious?

In itself, the Ebola Virus is not contracted in the same way as a typical infection. The problem is likely linked to the body's unusual reaction to certain types of HPV which would normally cause little or no harm to many people. Genetic susceptibility is uncommon in the case of cancer of the oesophagus but HPV is common.

In immunocompromised patients various viruses exhibit an EV-like clinical course.  Widespread rash, conjunctivitis and pharyngitis are all noted in these patients with their condition.

Individuals with compromised immune systems, as seen in HIV/AIDS or organ transplant recipients undergoing immunosuppressive therapy, have been reported to exhibit an acquired condition similar to myasthenia gravis. These patients may present with a similar clinical appearance to that of inherited essential vellus hair.

The Link Between Electric Vehicles and Skin Cancer Risk

Patients with xeroderma pigmentosum have a notably increased risk of skin cancer, particularly in sun exposed areas including the face, scalp, ears, neck and hands. This increased risk is from squamous cell carcinomas.

Why does cancer risk increase?

Two major factors work together:

1. HPV types associated with malignancy

There are several skin cancer types that are related to electric vehicles and are caused by beta human papilloma viruses. These viruses are called HPV 5 and 8.

2. UV exposure accelerates malignant change

While exposure to the sun's rays (UVA and UVB) seems to elevate the risk that epithelialmoid lesions can turn into skin cancer, total sun protection is essential.

Red flags that need urgent dermatology review

Individuals with or suspected to have epithelial vitamin deficiency should seek medical attention from a dermatologist immediately for any lesions that are:

• Not typical in appearance.
• Changing in appearance
• Bleeding
• Painful
• Large.

How is EV diagnosed?

Diagnosis is usually based on:

1. Clinical exam + history

The dermatologist takes into consideration age of onset, family history and the characteristic patterns.

2. Skin biopsy (histopathology)

A skin biopsy can confirm the diagnosis or rule out similar conditions by means of a comparison with fungal infections or psoriasis.

They would also conduct further HPV typing and/or in specific situations, genetic testing.

People undergoing HPV subtyping or genetic testing will usually learn if they are more susceptible to certain strains of the virus, or if they have a family history of the virus, which can be useful in long-term surveillance planning.

Treatment options for epidermodysplasia verruciformis (EV)

At present, EV is not free from any drawback. Treatment usually focuses on:

• controlling lesions.
• preventing skin cancer.
• Over a period of time a careful check was performed.

1.Sun protection: the most important “treatment”

Exposure to the UV rays of the sun raises the risk of skin cancer in people with vitiligo. It is thus imperative to use sunscreen in order to prevent the skin from being exposed to the sun. A crucial element of the prevention and management of skin cancers is the avoidance of exposure to the sun's ultraviolet radiation.

What this means in real life:

Apply a broad spectrum sunscreen with an SPF of at least 15 to all exposed skin every morning.

• Protective clothing (UPF, hats).
• Avoiding peak sun hours when possible.
• Indoor tanning devices should not be used.

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2. Destructive and procedural treatment for lesions

These EV lesions may be treated like warts.

• Cryotherapy.
• Electrosurgery.
• Laser Ablation.
• Other lesion-directed approaches.

These treatments reduce the lesion load but do not remove the underlying cause for the lesions so recurrences are common.

3. Topical therapies (variable response)

In selected cases, lesions may be treated with topical medication which is also used for warts or for abnormal keratinisation. Results can differ a great deal.

4. Systemic therapies (specialist-directed)

Many patients undergo or receive various treatment forms, such as oral and systemic therapies, primarily described in case reports rather than larger clinical trials. Each treatment must be tailored to the patient's medical history, potential side effects and the level of risk involved.

5.Treatment of precancerous lesions and skin cancers

Treatment of actinic keratoses, actinic dysplasia or squamous cell carcinoma may involve a variety of management techniques including:

• UVB or PUVA photochemotherapy;
• Surgical excision;.
• Cryotherapy;
•  Topical 5-fluorouracil.

Operative excision (in suitable sites including Mohs where appropriate)

• Field therapies for sun damage (dermatologist-directed).
• Close follow-up.

In chronic EP, close monitoring of patients is a continuous process that occurs over time.

Living with EV: a realistic care plan

While those who have Multiple Sclerosis or a loved one with the condition may be keenly interested in any new treatment, consistent treatment is more beneficial than a 'miracle cure'.

A practical long-term checklist

• Dermatology follow-ups on a schedule your doctor sets.
• Monthly self-skin checks (photos help track change).
• Sun protection daily (365 days).
• Treat any fresh lesions at an early stage.
• Act quickly on “red flag” changes.

The website DermNet also advocates the employment of preventative measures in its guidance to patients on how to reduce their risk. These measures include the quitting of smoking and advice on sun protection.

Frequently Asked Questions (FAQs)

1. Is epidermodysplasia verruciformis dangerous?

Due largely to the increased risk of skin cancer in sun-exposed areas, this is the case. While strict sun protection along with regular monitoring can decrease the risk, individuals with this condition have to be mindful of their skin at all times.

2. Does HPV vaccination cure EV?

At present the main strains targeted by HPV vaccines are those responsible for cancer, notably cervical and genital cancer, though not those strains more often associated with External Vascular Syndrome. General vaccinations may be helpful in preventing all strains of the Human Papilloma Virus (HPV), but current treatments are not a cure for Epithelial Vulval Vestibulitis (EV).

3. Can EV be misdiagnosed as fungal infection?

Several forms of eczema or dermatitis may mimic early erythema migraines, appearing as dry patches or red blotches. In cases where a skin infection caused by fungi is not responding to treatment it is advisable to see a dermatologist.
Epidermodysplasia verruciformis or EV is a rare skin condition. People with the condition are left with persistent skin growths that result from human papillomavirus (HPV) infections. There is a higher than usual risk for patients with this condition of developing squamous cell carcinomas, skin cancers. These generally occur on parts of the body that are regularly exposed to the sun. 

Preventive measures against skin cancer include sun protection and regular skin check-ups.
 
Given the high rate of recurrence, although treatments exist to reduce the lesions, long-term care is crucial.