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': "Dyskeratosis is seen in: \nSelect and explain. \nA. Pemphigus vulgaris, B. Bullous Pemphigoid, C. Darier's disease, D. Hailey-Hailey disease", 'role': 'user'}, {'content': "Answer: C \nExplanation: Darier's disease is characterized by defect in Ca+2\xa0pump that is necessary for desmosome function, due to mutation in ATP2A2 gene.\nBoth HHD and Darier's disease are characterized by acantholysis and suprabasal blister, but dysteratosis (premature keratinization in epidermis) is seen classically with Darier's disease.", 'role': 'assistant'}]