Erythema nodosum is an inflammatory skin condition that is a group of dermatoses characterized by the formation of painful, red nodules (pus-like lumps) under the skin. These lumps are usually located on the front of the shins, but can also occur on other parts of the body. Erythema nodosum can be caused by a variety of factors, including infections (such as streptococcal infections), inflammatory conditions, certain medications, and systemic diseases. The condition is often accompanied by a generalized reaction of the body, including fever, joint pain, and general weakness.
History of the disease and interesting historical facts
The history of erythema nodosum goes back to the beginning of the 20th century, when this disease was first described by the French dermatologist Albert Clinique in 1927. He identified erythema nodosum as a separate nosological unit based on the characteristic clinical picture and pathology. Interestingly, the name "erythema nodosum" comes from the Latin words "erithema" (redness) and "nodus" (nodule). In different eras, this disease was perceived differently: in the 18th century, it was considered a sign of the "wrath of the gods", and in the 20th century, with the growth of clinical practice, the emphasis was placed on the mechanisms of the inflammatory reaction as the main basis for the pathogenesis of erythema nodosum.
Epidemiology
Erythema nodosum is a relatively common condition, affecting women more often than men by a ratio of 3:1. Worldwide prevalence ranges from 1 to 5 cases per 100,000 people per year. Most cases occur in people between the ages of 20 and 40 years. In some areas, particularly those with high rates of streptococcal infections, the incidence of erythema nodosum may be significantly higher. Epidemiological studies have also found an association between erythema nodosum and conditions such as sarcoidosis, Crohn's disease, and reactions to certain medications.
Genetic predisposition to this disease
Genetic predisposition to erythema nodosum remains a poorly understood area. However, research suggests that certain genes may play an important role in the development of the disease. Among the genes involved are those responsible for interaction with the immune system, such as genes encoding cytokines and their receptors. For example, variations in the genes for interleukin-1 (IL-1), interleukin-6 (IL-6), and other pro-inflammatory molecules may be associated with an increased susceptibility to erythema nodosum. Naturally, the presence of predisposing genetic factors increases the likelihood of developing the disease in the presence of appropriate environmental triggers.
Risk factors for the development of this disease
Risk factors that contribute to the development of erythema nodosum can be classified into several categories:
- Infectious factors:
- Streptococcal infections
- Tuberculosis
- Viral infections (eg, EBV)
- Chronic inflammatory diseases:
- Crohn's disease
- Non-Hodgkin's lymphoma
- Sarcoidosis
- Medicines:
- Contraceptives
- Some antibiotics (penicillins)
- Sulfonamides
- Environmental factors:
- Exposure to chemicals
- Hypothermia
Diagnosis of this disease
Diagnosis of erythema nodosum involves several key steps. The main symptoms of the disease usually include:
- Painful nodular formations on the skin
- Erythema
- General weakness and fatigue
- Fever
Laboratory tests may include a complete blood count with inflammatory markers (C-reactive protein, ESR). Additional diagnostic tests may include a skin biopsy to confirm the pathological diagnosis. Radiological tests may be ordered to rule out associated diseases, such as respiratory diseases. It is important to differentiate other diseases that present with angular nodules, such as vasculitis and dermatomyositis.
Treatment
Treatment of erythema nodosum varies depending on the etiology of the disease and includes several approaches. General treatment is aimed at eliminating the causes of inflammation, including treatment of infections or systemic diseases.
Pharmacological treatment often includes nonsteroidal anti-inflammatory drugs (NSAIDs) to relieve pain and inflammation. In severe cases where NSAIDs are ineffective, steroids may be prescribed.
Surgical treatment may be required in rare cases when the nodes show signs of an abscess or require drainage. Alternative methods include physiotherapy and the use of anti-inflammatory ointments for local use.
List of medications used to treat this disease
- Ibuprofen
- diclofenac
- Prednisolone
- Colchicine
- Ortofen
Disease monitoring
Monitoring of erythema nodosum includes regular follow-up examinations and follow-up tests to assess the prognosis of the disease. Since erythema nodosum may be associated with systemic diseases, it is necessary to monitor for complications and progression of the underlying disease. The prognosis is generally good: most cases resolve spontaneously within a few weeks, but recurrence is possible. Complications may occur if there is inappropriate treatment or symptoms are ignored.
Age-related features of the disease
Erythema nodosum can occur in various age groups, but it is most common in young and middle-aged women. In children, the disease may present with systemic symptoms such as fever and general malaise, making diagnosis difficult. In older people, erythema nodosum may be associated with more serious systemic diseases and requires closer monitoring and treatment.
Questions and Answers
- What are the main symptoms of erythema nodosum? The main symptoms include painful nodules, reddened skin, fever and general weakness.
- How is erythema nodosum diagnosed? Diagnosis includes clinical examination, laboratory tests, and sometimes skin biopsy.
- What treatment is needed for erythema nodosum? Treatment includes NSAIDs, corticosteroids, and monitoring of comorbidities.
- Can erythema nodosum come back? Yes, erythema nodosum can be recurrent, especially if there are triggers.
- What factors can provoke erythema nodosum? These could be infections, allergic reactions to medications, or diseases such as Crohn's disease.
Advice from Dr. Oleg Korzhikov
Dr. Oleg Korzhikov emphasizes the importance of recognizing the triggers of erythema nodosum: “People suffering from this disease should closely monitor their health and seek medical help at the first signs. Do not forget about preventive measures - avoid hypothermia, lead a healthy lifestyle and visit a doctor regularly. If you have a history of inflammatory diseases, be especially attentive to new symptoms. Each deterioration in the condition requires careful attention and consultation with a dermatologist.”
