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: Dental
[{'content': 'Sexually active male comes with complaints of recurrent ulcers over the glans which heals with hyperpigmentation, probable diagnosis is – \nSelect and explain. \nA. Aphathous ulcer, B. Fixed drug eruption, C. Herpes genitalis, D. Chlamydial infection', 'role': 'user'}, {'content': "Answer: B \nExplanation: Information provided in this question are not complete with any of the given options.\nAnyways, we have to choose one answer.\nInformations in this question are :-\n\n\nSexually active male\nUlcers on genitalia\nRecurrent lesion\nHealing with hyperpigmentation\n\n\nAfter reading sexually active male in the question, first thing usually comes in the mind is that it must be a STD.\nBut this is not the case in this question.\nSTD in this question are :-\n\n\nChlamydial infection\xa0→\xa0does not cause recurrent lesion and does not heal with hyperpigmentation.\nHerpes\xa0→\xa0causes recurrent lesion but does not heal with hyperpigmentation.\n\n\nSo, both chlamydial infection and herpes genitalis are excluded.\nRecurrent aphthous like ulceration on genitalia can occur in Bechet's syndrome, but these ulcers do not heal with hyperpigmentation and history of sexually active female has nothing to do with it.\nNow we are left with one option,\xa0i.e.fixed drug eruption\xa0and all the given symptoms can occur in fixed drug eruption-\n\n\nGenitalia is most common site\nUlcer is recurrent, occurs every time with the offending drug intake\nHeals with hyperpigmentation.\n\n\nHowever, in this question history of drug intake is not given, which is very important to suggest the diagnosis of fixed drug eruption.\nBut, I have no point to exclude fixed drug eruption, on the other hand other three options can be excluded easily.\nSo, best answer in this question is fixed drug eruption.", 'role': 'assistant'}]