Book excerpt: This issue of Immunology and Allergy Clinics, guest edited by Drs. Peck Ong and Peter Schmid-Grendelmeier, is devoted to Allergic Skin Diseases. Articles in this issue include Wet-wrap Therapy in Atopic Dermatitis; Biologics in Chronic Urticaria; Clinical Measures of Chronic Urticaria; Cutaneous Manifestation of Drug Allergy; Itch in Atopic Dermatitis; Biomarkers in Atopic Dermatitis; Differential Diagnosis of Atopic Dermatitis; Differential Diagnosis of Chronic Urticaria; ACE-inhibitor-induced Angioedema; The Role of Fungi in Atopic Dermatitis; Cutaneous Manifestation of Food Allergy; Pediatric Mastocytosis; Allergic Contact Dermatitis; Hereditary Angioedema; Infectious Complications in Atopic Dermatitis; and Cutaneous Manifestations Primary Immunodeficiency/Autoimmunity.