Eczema and Allergic Rashes: Effective Treatment and Control

What is eczema and how does it manifest?

Eczema is a common chronic inflammatory skin disease that can significantly impair patients' quality of life due to intense itching and characteristic rashes [3, 5, 8]. It manifests as redness, dryness, scaling, and sometimes the formation of blisters on the skin. Although the terms "hives" and "eczema" are often used to describe skin rashes, it is important to understand their differences. Hives (urticaria) are characterized by the sudden appearance of itchy welts that usually disappear within 24 hours. Eczema, on the other hand, is a more prolonged inflammation, often with a chronic relapsing course, and can be triggered by various factors, including allergic reactions.

There are several types of eczema, including atopic dermatitis (the most common form, often associated with allergies), contact dermatitis (caused by direct contact with an irritant or allergen), and other forms such as hand and foot eczema or nipple eczema [1, 2, 3, 5]. Regardless of the type, eczema requires a comprehensive approach to diagnosis and treatment.

Diagnosis and Identification of Eczema Causes

Effective treatment of eczema begins with a thorough diagnosis, which includes taking a detailed medical history. It is important for the physician to determine the potential exposure to irritants and allergens that may have triggered or aggravated the condition [1].

• Allergy testing: Patch testing is considered the standard method for identifying contact allergens, especially in hand and foot eczema [1].
• Disease severity assessment: To quantify the severity of atopic dermatitis and its impact on quality of life, special indices are used, such as the SCORing Atopic Dermatitis Index (SCORAD) and the Dermatology Life Quality Index (DLQI) [3]. These tools help doctors and patients track condition dynamics and treatment effectiveness.
• Disease control assessment: The Atopic Dermatitis Control Tool (ADCT) is used to assess long-term control of atopic dermatitis [3].

Understanding the individual characteristics of eczema progression in each patient allows for the development of the most effective treatment strategy.

A Comprehensive Approach to Eczema Treatment

Eczema treatment is a multifaceted process that goes beyond simply applying medications. It requires a comprehensive approach aimed at eliminating or avoiding causative factors, modifying lifestyle, and providing social support [1, 8].

• Trigger avoidance: A crucial step is identifying and avoiding contact with irritants and allergens that can cause flare-ups [1, 8].
• Skin care: Regular use of moisturizers (emollients) is the basis of skin care in eczema, helping to restore the skin's barrier function [8].
• Topical therapy: For moderate symptoms, potent or super-potent topical corticosteroids are often prescribed [1, 5]. Topical calcineurin inhibitors are also used [8].
• Psychological and educational support: Eczema can significantly affect psychological well-being. Educational programs and psychological support play an important role in disease management, helping patients cope with stress and improve their quality of life [8].

The goal of treatment is not only clearing the skin, but also restoring its functions and improving the patient's overall well-being [1].

Modern Systemic Treatments

For patients with moderate to severe eczema, especially atopic dermatitis, when topical therapy is insufficient, systemic treatments may be recommended [3, 4, 6].

• Systemic immunomodulators: These drugs aim to modulate the body's immune response, which plays a key role in the development of eczema. Systematic reviews and network meta-analyses continuously evaluate their efficacy and safety [4].
• New topical and systemic drugs: In recent years, new classes of drugs have emerged, such as Janus kinase inhibitors (JAK inhibitors) and phosphodiesterase-4 inhibitors (PDE4 inhibitors), which have shown efficacy in moderate-to-severe atopic dermatitis [3].
• Biological therapy: Drugs such as dupilumab, and newer oral agents such as abrocitinib, demonstrate significant improvement in symptoms, including itching, in patients with severe and/or refractory atopic dermatitis [6]. Studies show that abrocitinib can significantly reduce atopic dermatitis symptoms and improve itch response early in therapy [6].

The choice of systemic therapy should always be discussed with a doctor, taking into account the patient's individual characteristics, disease severity, and potential side effects.

Managing Itch in Eczema

Itching is the primary and most distressing symptom of many dermatological conditions, including eczema [3, 7]. Intense itching significantly reduces quality of life and can lead to scratching, which exacerbates inflammation and the risk of infection.

Although antihistamines are often considered first-line therapy for itching, their role in eczema is limited. They are most effective in hives and drug-induced reactions where histamine plays a key role [7]. However, the pathophysiological mechanisms of itching in eczema differ, and therefore other approaches are required.

In recent years, new drugs with attractive efficacy and safety profiles have emerged for managing itch in clinical practice [7]. These advances allow physicians to be more ambitious in achieving treatment goals for patients with itch, offering more targeted and effective solutions than traditional antihistamines.

Special Forms of Eczema: Hands, Feet, and Nipples

Eczema can affect various parts of the body, and certain locations present specific treatment challenges:

• Hand and foot eczema: This is a chronic condition affecting a significant portion of the population (up to 14.5%) and often leads to serious consequences for quality of life, including missed work or school and reduced productivity [1, 5]. Treatment of this eczema is often complex, and patients experience dissatisfaction with available options [1]. In addition to standard methods, new therapeutic targets are actively being researched to manage hand eczema through its core mechanisms [5].
• Nipple eczema: Nipples are an important part of the breast, performing physiological, sexual, and aesthetic functions. They can be affected by atopic, irritant, and allergic contact eczema, which often reduces patients' quality of life [2]. Diagnosis of nipple eczema requires careful differential diagnosis to rule out other conditions [2].

For these forms of eczema, an individualized approach that takes into account the specifics of the affected area and potential triggers is particularly important.

Sources

• 1. Management of chronic hand and foot eczema. Australian/New Zealand clinical review. https://pubmed.ncbi.nlm.nih.gov/32776537/
• 2. Nipple eczema: A systematic review and practical recommendations. https://pubmed.ncbi.nlm.nih.gov/36695082/
• 3. Expert opinion on the management of moderate-to-severe atopic dermatitis in Qatar. https://pubmed.ncbi.nlm.nih.gov/37700510/
• 4. Systemic immunomodulatory treatments for atopic dermatitis: update of a systematic review and network meta-analysis. https://pubmed.ncbi.nlm.nih.gov/35293977/
• 5. Review of current and emerging treatments for hand eczema. https://pubmed.ncbi.nlm.nih.gov/37496489/
• 6. Efficacy and safety of abrocitinib in patients with severe and/or refractory atopic dermatitis: post-hoc analysis of the phase 3 randomized JADE COMPARE study. https://pubmed.ncbi.nlm.nih.gov/37213005/
• 7. Itch in dermatology: Part 2 — Diseases and their treatment. https://pubmed.ncbi.nlm.nih.gov/37302478/
• 8. Educational and psychological interventions for atopic dermatitis (eczema). https://pubmed.ncbi.nlm.nih.gov/39132734/

Disclaimer: The information provided in this article is for reference purposes only and cannot replace professional medical advice. Always consult a qualified specialist for the diagnosis and treatment of any medical conditions.