Dermatitis atópica, too known as eczema, is a common skin condition and a frequent reason people seek dermatological care. Beyond the physical symptoms, the condition can significantly impact a patient’s life, according to experts. Understanding the causes and complexities of atopic dermatitis is crucial for effective management and improved quality of life for those affected.
The condition is a chronic, inflammatory skin disease that flares up periodically. It’s primarily caused by a compromised skin barrier and a dysfunction of the immune system, specifically involving Th2 lymphocytes. Several factors contribute to its development, including a genetic predisposition – individuals with a family history of atopic dermatitis are at a significantly higher risk.
Immune system dysregulation also plays a key role, with an imbalance in T helper lymphocytes favoring a Th2 profile over Th1. A compromised epidermal barrier increases skin permeability and water loss, making it easier for allergens to penetrate and trigger sensitization, potentially leading to other atopic conditions. Recent research has highlighted the importance of filaggrin, a structural protein in the epidermis, with mutations in the filaggrin gene linked to earlier onset and more severe forms of atopic dermatitis.
Environmental factors can also trigger flare-ups, including sun exposure, dry climates, low vitamin D levels, emotional stress, tobacco smoke, and pollution. The skin’s microbiome is also implicated, with disruption of the epidermal barrier creating an environment conducive to microbial colonization, particularly by Staphylococcus aureus, which can perpetuate inflammation and immune responses.
For adults, atopic dermatitis frequently affects the head and neck. These areas are particularly vulnerable to irritants found in cosmetics, hair dyes, sunscreens, perfumes, and soaps. According to Dr. Rosa Perelló, a dermatologist at Hospital Universitari Son Espases, dermatitis atopic in these areas is often more difficult to treat.
“The dermatitis atópica in head and neck is more difficult to treat and is for this reason that this location is the one that most affects the quality of life of people, due to its high visibility and the impact that this has, both in the physical and emotional plane,” Dr. Perelló explained. This visibility and potential for social stigma contribute to the significant impact on patients’ well-being.
Approximately 70% of adult cases involve the head and neck, making effective treatment in this region particularly significant. Although, managing atopic dermatitis in this area can be complicated by the potential for allergic contact dermatitis from topical products, as well as the presence of other skin conditions like seborrheic dermatitis or rosacea. Paradoxically, some treatments used to control atopic dermatitis can even exacerbate symptoms on the face.
Beyond the physical discomfort, atopic dermatitis can have a profound impact on a patient’s emotional and social life. The condition is linked to increased levels of stress, anxiety, and depression, affecting not only the individual but also their families. Visible lesions, particularly on the face and neck, can lead to stigmatization and avoidance of social or athletic activities. Intense itching and sleep disruption can also impair concentration and productivity at work or school.
Effective management focuses on controlling flare-ups and preventing them from occurring. Treatment is tailored to the severity of the symptoms and the presence of any co-existing conditions. A standardized approach begins with patient education on avoiding irritants, using appropriate clothing (like cotton and natural fabrics), and avoiding synthetic materials. Regular use of emollients designed for atopic skin and avoiding perfumed products are also recommended.
Topical treatments, such as topical corticosteroids and immunomodulators, are used for mild cases. More moderate to severe cases may require systemic treatments, conventional and advanced therapies, or phototherapy. The findings could guide future treatment strategies and improve patient outcomes.
Atopic dermatitis is often associated with other atopic conditions, including asthma, allergic rhinitis, food allergies, and eosinophilic esophagitis. This sequence of atopic manifestations is known as the “atopic march,” often starting with dermatitis atopic, followed by food allergies, asthma, and allergic rhinitis. The update underscores ongoing public health challenges related to allergic diseases.
Non-atopic comorbidities can also occur, including neuropsychiatric conditions, cardiovascular disease, cancer, and autoimmune diseases. Patients with atopic dermatitis have a higher risk of depression, anxiety, and suicidal ideation, potentially due to sleep disturbances caused by intense itching. Children with atopic dermatitis are also at increased risk for attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder, and emotional or behavioral disorders.
The severity of the disease and the resulting impact on quality of life are closely linked to pruritus and insomnia. Recent research suggests a possible association between atopic dermatitis and obesity and coronary artery disease, suggesting the condition may have systemic effects. It’s believed that systemic inflammation may contribute to vascular damage, increasing the risk of coronary artery disease and cardiovascular events. Atopic dermatitis has also been linked to an increased risk of lymphoma and other autoimmune diseases, such as alopecia areata, vitiligo, lupus erythematosus, chronic urticaria, and rheumatoid arthritis.
A multidisciplinary approach, involving dermatologists, pulmonologists, allergists, gastroenterologists, psychiatrists, and psychologists, is essential for comprehensive management of atopic dermatitis and its associated comorbidities.
“The main unmet need is the integral and patient-centered approach, that not only treats the skin lesions of atopic dermatitis, but also all the other comorbidities, especially those related to the psychosocial sphere that, are those that have the greatest impact on the patient’s quality of life,” experts say.
