Dr. Shields is interested in complex medical dermatology with a focus on neutrophilic (pyoderma gangrenosum, Sweet syndrome) and granulomatous dermatoses (sarcoidosis, granuloma annulare, necrobiosis lipoidica, reactive granulomatous dermatitis, cutaneous Crohn disease, necrobiotic xanthogranuloma), as well as autoimmune and connective tissue diseases.