This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skin, Subject name: Medicine
What is the most likely diagnosis in this woman who developed eosinophilia and a diffuse erythematous eruption while being treated with hydroxychloroquine for Sjogren's syndrome? 
Select and explain. 
A. Bullous impetigo, B. Exanthematous pustulosis, C. Exfoliative dermatitis, D. Stevens-Johnson syndrome
B: Exanthematous pustulosis
Answer: B: Exanthematous pustulosis 
Explanation: Answer B. Exanthematous pustulosisYellow hyperplastic papules on the tongue of a hydroxychloroquine-treated patient with a diffuse erythematous eruption is most consistent with a diagnosis of hydroxychloroquine-induced acute generalized exanthematous pustulosis. The lesions resolved following withdrawal of the medication and treatment with prednisolone.