Complete Guide to Pityriasis lichenoides et varioliformis acuta
Everything you need to know about this condition
What is Pityriasis lichenoides et varioliformis acuta?
Pityriasis lichenoides et varioliformis acuta (PLEVA) is a rare skin condition characterized by the sudden onset of small, inflamed bumps or blisters that can leave scars. The condition is often confused with other skin conditions, such as pityriasis rosea or guttate psoriasis, but it has distinct features that set it apart. According to the World Health Organization (WHO), PLEVA affects approximately 1 in 100,000 people worldwide.
Causes and Risk Factors
The exact cause of PLEVA is still unknown, but research suggests that it may be related to viral infections or autoimmune disorders. Some studies have linked the condition to the presence of certain viruses, such as the human herpesvirus 6 (HHV-6) or the human herpesvirus 7 (HHV-7). Additionally, people with a family history of autoimmune disorders, such as rheumatoid arthritis or lupus, may be more likely to develop PLEVA. Lifestyle factors, such as stress and exposure to certain chemicals, may also trigger the condition.
Signs and Symptoms
The symptoms of PLEVA can vary from person to person, but they often include:
- Small, inflamed bumps or blisters that can appear anywhere on the body, but are most common on the arms, legs, and trunk
- Itching, burning, or stinging sensations on the skin
- Scarring, which can occur if the lesions are scratched or picked at
- Fever, which can occur in some cases In the early stages, the lesions may be small and barely noticeable, but they can quickly progress to larger, more inflamed lesions that can be painful and itchy.
How is Pityriasis lichenoides et varioliformis acuta Diagnosed?
Diagnosing PLEVA can be challenging, as the symptoms can be similar to those of other skin conditions. A doctor will typically perform a physical exam and take a medical history to rule out other conditions. They may also order laboratory tests, such as:
- Blood tests to check for signs of infection or inflammation
- Skin biopsies to examine the affected skin cells
- Imaging tests, such as X-rays or CT scans, to rule out other conditions According to the Mayo Clinic, a diagnosis of PLEVA is often made based on the presence of characteristic skin lesions and a history of sudden onset.
Treatment Options
Treatment for PLEVA depends on the severity of the condition. Mild cases may be treated with:
- Topical corticosteroids to reduce inflammation and itching
- Moisturizing creams to soothe and calm the skin
- Phototherapy, such as ultraviolet (UV) light therapy, to reduce inflammation More severe cases may require:
- Systemic corticosteroids to reduce inflammation and suppress the immune system
- Antibiotics to treat any underlying infections
- Hospitalization in rare cases where the condition is severe or life-threatening According to the National Institute for Health and Care Excellence (NICE) guidelines, topical corticosteroids are the first-line treatment for PLEVA.
Home Care and Self-Management
There are several things you can do at home to manage your PLEVA symptoms and prevent further irritation:
- Apply moisturizing creams to soothe and calm the skin
- Use cool compresses to reduce itching and inflammation
- Avoid scratching or picking at the lesions, as this can lead to scarring
- Wear loose, comfortable clothing to reduce irritation
- Avoid exposure to certain chemicals or allergens that may trigger the condition It's also important to manage stress, as this can exacerbate the condition. Stress management techniques, such as meditation or yoga, may be helpful.
Prevention Strategies
While there is no sure way to prevent PLEVA, there are several things you can do to reduce your risk:
- Practice good hygiene, such as washing your hands regularly and avoiding close contact with people who have viral infections
- Avoid exposure to certain chemicals or allergens that may trigger the condition
- Manage stress through techniques such as meditation or yoga
- Get enough sleep and exercise to keep your immune system strong According to the WHO, maintaining a healthy lifestyle and avoiding triggers can help reduce the risk of developing PLEVA.
When to See a Doctor
If you experience any of the following symptoms, seek medical attention immediately:
- Sudden worsening of symptoms
- Fever over 102°F
- Signs of infection, such as redness, swelling, or pus
- Scarring or permanent damage to the skin It's also important to see a doctor if you have a family history of autoimmune disorders or if you have been exposed to certain viruses or chemicals.
Living with Pityriasis lichenoides et varioliformis acuta
Living with PLEVA can be challenging, but there are several things you can do to manage your symptoms and improve your quality of life:
- Work with your doctor to develop a treatment plan that works for you
- Practice good hygiene and avoid exposure to triggers
- Manage stress and get enough sleep and exercise
- Connect with others who have the condition through support groups or online forums According to the National Psoriasis Foundation, people with PLEVA can lead active and fulfilling lives with proper treatment and management.

Written by Dr. Dinesh Kumar
MD, Specialist Physician • 15+ Years Experience