This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Dermatitis, Subject name: Dental
[{'content': 'Characteristic feature of atopic dermatitis is - \nSelect and explain. \nA. Pruritus, B. Dennies Lines, C. Scaling skin, D. Rash', 'role': 'user'}, {'content': 'Answer: A \nExplanation: ATOPIC DERMATITIS:-Atopic eczema.Chronically relapsing skin disorder that usually begins at infancy characterised by pruritus,xerosis and eczematisation. Clinical features-Infantile phase:- AD more acute with predominantly involving face,scalp and extensor surfaces of extremities.Typically there are papules,vesicles,excoriations and exudation. Childhood phase:-Lichenification and localisation of rash to the flexural folds of extremities. Adults:-Lichenification and skin prone to itching and inflammation. pruritus is the characteristic feature of atopic dermatitis. Ref Harrison20th edition pg 2156', 'role': 'assistant'}]