Atopic dermatitis, often referred to as atopic eczema, is a long-term inflammatory condition of the skin. It is characterized by itchy, red, swollen, and cracked skin. This condition is part of a larger group of skin conditions known as dermatitis. Atopic dermatitis is a common ailment, affecting about 20% of people at some point in their lives. It is more prevalent in children and tends to affect females slightly more than males.
Symptoms and Characteristics
Atopic dermatitis
manifests as itchy, red, and swollen skin that can become cracked over time. In some cases, clear fluid may seep from the affected areas, which can thicken as the condition progresses. The severity of symptoms can vary, and while the condition can occur at any age, it typically begins in childhood. In infants under one year, the face, limbs, and much of the body can be affected. As children grow older, the condition often localizes to areas such as the insides of the knees, folds of the elbows, and around the neck. In adults, the hands and feet are commonly affected.
Scratching the affected areas can worsen the eczema and increase the risk of skin infections. Many individuals with atopic dermatitis also develop hay fever or asthma, indicating a link between these conditions.
Causes and Risk Factors
The exact cause of atopic dermatitis is unknown, but it is believed to involve a combination of genetic factors, immune system dysfunction, environmental exposures, and issues with skin permeability. If one identical twin is affected, the other has an 85% chance of having the condition, highlighting a strong genetic component. People living in cities and dry climates are more commonly affected. Exposure to certain chemicals and frequent hand washing can exacerbate symptoms, although emotional stress, while it can worsen symptoms, is not a direct cause. Importantly, atopic dermatitis is not contagious.
Treatment and Management
Managing atopic dermatitis involves avoiding triggers that worsen the condition, enhancing the skin barrier through proper skin care, and treating underlying inflammation. Moisturizing creams are used to prevent dryness and flare-ups, while anti-inflammatory corticosteroid creams help control flare-ups. In cases where other treatments are ineffective, creams based on calcineurin inhibitors may be used. Antihistamine pills can also help with itchiness. Phototherapy is beneficial for some individuals, and systemic medications like cyclosporin and methotrexate may be necessary for severe cases. While dietary exclusion is not generally beneficial, it may be considered if food allergies are suspected.
