Parapsoriasis is a dermatological disorder characterized by a number of clinical manifestations, including erythematous plaques located on the skin. Although parapsoriasis can often be associated with other forms of psoriasis, its symptoms and morphology may differ, and it may take a chronic form, which implies a long-term course of the disease. The disease can manifest itself in both limited and generalized forms, and also varies in the degree of inflammation and scaling. Parapsoriasis deserves attention not only because of its protracted nature, but also due to the potential for concomitant systemic diseases.
History of the disease and interesting historical facts
Parapsoriasis was first described in medical literature at the beginning of the 20th century. The collected facts about the disease show that it was known long before the advent of modern dermatological classification. Numerous studies have been conducted on the causes and mechanisms of pathogenesis of parapsoriasis, and in different historical periods, emphasis was placed on different aspects of its clinical characteristics. In particular, during the times of ancient medicine, parapsoriasis was often associated with disturbances in the organic energy system. The main achievements in understanding the disease were made at the end of the 20th - beginning of the 21st century, when more in-depth studies of its immune-inflammatory mechanisms began. Interestingly, parapsoriasis has become the subject of detailed study not only by dermatologists, but also by scientists involved in genetics and immunology.
Epidemiology
The epidemiology of parapsoriasis remains an active research topic. Current data suggest that the incidence ranges from 0.5% to 3% in the general population, depending on region and ethnicity. Parapsoriasis is more common in adults, but can also occur in childhood. Different forms of the disease may vary in frequency and manifestations in different age groups. Studies show that half of patients may have a family history, suggesting that genetic predisposition may play an important role.
Genetic predisposition to this disease
Current research confirms that parapsoriasis has a hereditary component. In particular, certain genes, such as HLA-Cw6 and substitutions in the immunogenetic system, have been identified that may influence the risk of developing the disease. Mutations in genes responsible for the immune response and dermatological processes have also been associated with parapsoriasis. For example, changes in the IL-17 and IL-23 genes have been identified in patients with parapsoriasis, which emphasizes the role of portable immune mechanisms in the pathogenesis of the disease. However, the exact mechanism of inheritance and the interaction with environmental factors require further study.
Risk factors for the development of this disease
There are several factors that can predispose to the development of parapsoriasis. They can be divided into physical, chemical and psychological. Physical factors include:
- skin injuries;
- overheating or hypothermia;
- infections, especially streptococcal;
- the onset of a disease associated with stress and emotional overload.
Chemical factors include:
- the effects of certain medications (eg, lithium, beta blockers);
- alcohol;
- dimethyldiethylamine.
There are also researched links with certain occupations where there is increased skin exposure (eg, working with chemicals).
Diagnosis of this disease
Diagnosis of parapsoriasis is based on clinical examination and additional studies. The main symptoms include:
- bright red plaques;
- peeling;
- itching and burning;
- Skin conditions can range from mild to severe inflammation.
Laboratory studies may include testing for infectious agents and cellular markers of inflammation. Radiologic studies are not routinely performed in parapsoriasis but may be used to rule out associated autoimmune diseases. The differential diagnosis includes psoriasis, eczema, and other dermatologic conditions, which requires a comprehensive clinical evaluation.
Treatment
Treatment of parapsoriasis can be both local and systemic. General approaches to therapy include:
- Ultraviolet irradiation;
- Corticosteroid creams and ointments;
- Biological therapy;
- Systemic immunosuppressive drugs.
Pharmacological treatment may include drugs such as methotrexate, acitretin, and apremilast, which help control inflammation and symptoms of the disease. Surgery is generally not recommended due to the risks.
List of medications used to treat this disease
Among the means used in the treatment of parapsoriasis, the following stand out:
- Methotrexate;
- Acitretin;
- Apremilast;
- Ustekinumab;
- Adalimumab;
- Tokiluzumab.
These drugs act on different mechanisms of the disease and help control symptoms.
Disease monitoring
Monitoring of parapsoriasis includes regular follow-up examinations to assess the effectiveness of treatment and identify possible complications. The prognosis of the disease depends on the form and severity, but in most cases the patient's condition can be stabilized. Complications may include the development of other autoimmune diseases and the risk of infections, depending on the drugs used.
Age-related features of the disease
Parapsoriasis can manifest itself at any time, but its course can vary depending on the patient's age. In children, the disease often has a milder form and can improve rapidly. In older people, on the contrary, there is often a significant deterioration in symptoms, which is associated with age-related changes in the immune system.
Questions and Answers
- What are the main symptoms of parapsoriasis? The main symptoms include erythematous plaques, scaling, itching and inflammation of the skin.
- How to treat parapsoriasis? Treatment includes local therapy, systemic drugs and biological therapy, combining different approaches depending on the extent of the disease.
- How long does parapsoriasis last? Parapsoriasis can be chronic, and the duration of symptoms varies from person to person, but most patients experience exacerbations in the autumn-winter period.
- Is it possible to completely cure parapsoriasis? There is currently no complete cure, but long-term remission and symptom control can be achieved.
- What are the risk factors for developing parapsoriasis? Risk factors include genetic predisposition, stress, skin trauma and exposure to certain chemicals.
