This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
[{'content': 'NOT a feature of childhood asthma is – \nSelect and explain. \nA. History of atopic dermatitis, B. Raised IgG level, C. Improves with age, D. Absence of wheezing after exercise', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Asthma \n\nBronchial asthma is a disease characterized by an increased responsiveness of airways to a variety of stimulus and causes recurrent attacks of wheezing, breathlessness, chest tightness and cough.\nThe symptoms are due to bronchoconstriction which is reversible in a large majority of the cases, either spontaneously or in response to treatment.\nAsthma is the commonest chronic illness during childhood.\nIt is a type I hypersensitivity, which is mediated by IgE IgE is raised (not IgG)\n\nRisk factors\n\nFamily history of asthma\nFamily history of atopic disease (Atopic dermatitis, allergic rhinitis).\nBronchiolitis during infancy.\nSensitization to allergenes (dust mite, animal danders, cockroaches and Alternaria) during childhood.\nPassive smoking\n\nThe response of Asthmatic patients to exercise -\nMild exercise i.e., running for 1-2 minutes caused bronchodilation in asthmatic patients and can reduce wheezing (wheezing is produced due to obstruction in bronchi). Severe exercise will cause bronchoconstriction in virtually all asthmatic patients and will aggravate wheezing.\nPrognosis of Asthma -\nThe prognosis of young asthmatic children is generally good. Longitudinal studies indicate that in patients who have mild asthma the remission rate is about 50% i.e., 50% of them will be asthma free in their adulthood.\nIn severe asthma characterized by chronic steroid-dependent disease, the remission rate is very less. About 95% of them will develop into asthmatic adults.', 'role': 'assistant'}]