<prompt> An infant presented with erythematous lesions on cheek and extensor aspect of upper and lower limbs. There is a family history of Asthma. The probable diagnosis is:Air borne contact dermatitisAtopic dermatitisSeborraehic dermatitisInfectious eczematoid dermatitis  <response>: History of atophy asthma in family, with erythematous lesions on face cheek and extensor surface of limbs is suggestive of atopic dermatitis. Ref: Pediatric Allergy, Asthma And Immunology By Arnaldo Cantani, 2008, Page 511; Harrisons Principles of Internal Medicine 16th Edition, Page 268; Roxburghs Common Skin Diseases 17th Edition, Page 105-112; Illustrated textbook of dermatology: Pasricha 3rd Edition, Page 152; Fitzpatricks Dermatology in General Medicine 6thEdition, Page 1181-1203; Rooks Textbook of Dermatology 7th Edition, Page 18.1-18.30 