Atopic Dermatitis: A Systemic Disease 

In this episode of Topical Conversations, Michael Lewitt, MD, and James Song, MD, explore the systemic nature of atopic dermatitis (AD) and its far-reaching effects beyond the skin. Drawing comparisons to psoriasis, they discuss how inflammation in AD is not confined to lesional areas, but extends to non-lesional skin, the bloodstream, and other organ systems—making the need for early recognition and intervention increasingly urgent. 

Comorbidities: Atopic and Beyond 

Drs Lewitt and Song break down the diverse comorbidities associated with AD. Atopic conditions such as asthma, allergic rhinitis, eosinophilic esophagitis, and allergic conjunctivitis are common, but so are non-atopic burdens like sleep disturbance, reduced school and work productivity, and complications from systemic steroid use. They highlight the importance of recognizing both types of comorbidities to guide management strategies. 

Prioritizing Conversations in a Short Visit 

Given the time constraints of typical dermatology visits, both physicians emphasize using a "high-yield" mental checklist to screen for potential comorbidities. Asking simple questions about breathing, swallowing, nasal symptoms, and eye dryness can help uncover issues early. Dr Song underscores that while dermatologists cannot manage every comorbidity, timely recognition and referral are key. 

The Role of Early Intervention 

Early treatment of AD may do more than control current symptoms—it could potentially prevent the development of future comorbidities. They discuss how therapies targeting key cytokines like IL-4 and IL-13 might reduce barrier dysfunction and immune activation, ultimately altering the long-term trajectory of the disease. For pediatric patients especially, intervening early could disrupt the "atopic march" toward additional allergic diseases. 

Collaborating Across Specialties 

Both doctors advocate for strong collaboration with allergists, pulmonologists, gastroenterologists, and mental health providers when managing complex cases. Dr Lewitt likens it to having multiple cooks in the kitchen making the same dish—working together toward shared patient goals. Dermatologists, they agree, are often in the ideal position to recognize systemic signs first and initiate appropriate care pathways. 

Key Takeaways

• Atopic dermatitis is a systemic inflammatory disease that extends beyond the skin. 
• Common comorbidities include both atopic (asthma, allergic rhinitis) and non-atopic (sleep disturbances, productivity loss) conditions. 
• Early screening for comorbidities during dermatology visits can improve patient outcomes. 
• Early intervention with targeted systemic therapies may help prevent the progression of the atopic march. 
• Collaboration with other specialists is critical for comprehensive patient care.