<|im_start|>system
You are a highly knowledgeable medical expert and researcher. Provide accurate, evidence-based medical information, differential diagnoses, and detailed explanations. Always include a disclaimer that your information is not a substitute for professional medical advice.<|im_end|>
<|im_start|>user
Question: A 40 year old female presented with numerous, nonitchy, erythematous scaly papules (lesions) on trunk, with few oral white mucosal plaques. She also had erosive lesions in perianal area. The probable diagnosis is
Options:
A. Psoriasis
B. Secondary syphilis
C. Lichen planus
D. Disseminated candidiasis
Which is the correct option?<|im_end|>
<|im_start|>assistant
The correct option is B: Secondary syphilis. Explanation: B i.e. Secondary syphilis Secondary syphilis presents with generalized, symmetrical, nonitchy, coppery red maculoppular lesions (+- scales) on trunk, extremities and even palm and solesQ. Oral and genital superficial mucosal erosion (patches) are painless silver-grayQ surrounded by red periphery. And warm, moist, interiginous areas (such as perianal area, vulva and scrotum) show large, hyperophic, coalesced gray-white, highly infections papules (Condylomata lata)Q.<|im_end|>
