This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Erythmato-Squamous and Lichenoid Eruption, Subject name: Skin
[{'content': 'The mainstay of treatment of vitiligo is- \nSelect and explain. \nA. PUVA, B. Imiqinod, C. Acyclovir, D. Coal tar', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. is \'a\' i.e., PUVA "Pheto chemotherapy with psorolens with UVA exposure (PUVA) forms the mainstay of therapy in vitiligo "____ Neena khanna"Despite the development in phototherapy, PUVA and PUVA SOL still remain the mainstay of therapy".____ VankataramGuidlines for treatmentLocalized diseaseo New lesionso Old lesionsTopical corticoststeroidsTopical PUVAExtensive diseaseo New lesionso Old lesionso Intolerance to PUVAOral corticosteroids + PUVA/NB-UVBOral PUVA/PUVA Sol/NB-UVBOral corticosteroidsGeneralized lesionsMonobenzyl ether of hydroquinoneNote - NB-UVB : Narrow band UVB', 'role': 'assistant'}]