Contact Dermatitis in the United States: A Population-Based Study on Patient Visit Characteristics and Treatment Prescription Patterns.

Background: Contact dermatitis (CD) affects ∼15% of the general population over a lifetime. However, there is a lack of epidemiological studies on treatment patterns for CD. Objective: We aim to analyze the patient characteristics and prescribing patterns among dermatologists and general practitioners (GPs) (internal medicine [IM] and family medicine [FM]) for CD in the United States. Methods: We conducted a population-based study using the National Ambulatory Medical Care Survey. Results: We identified 178,017,680 weighted patient visits for CD from 2001 to 2016. Dermatologists saw more white and non-Hispanic patients than GPs. GPs were less likely to prescribe ultrahigh potency topical corticosteroids (FM OR 0.27; P < 0.001, IM OR 0.41; P < 0.001) and more likely to prescribe oral antihistamines (FM OR 3.71; P < 0.001, IM OR 3.56; P < 0.001), oral corticosteroids (FM OR 5.35; P < 0.001, IM OR 6.87; P < 0.001), and injectable corticosteroids (FM OR 3.42; P = 0.006, IM OR 5.68; P < 0.001) than dermatologists. Conclusions: Across CD visits, GPs were less likely than dermatologists to prescribe ultrahigh potency topical corticosteroids and more likely than dermatologists to prescribe oral antihistamines and systemic corticosteroid therapy.