This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology and Rheumatology, Subject name: Medicine
[{'content': 'Keratoderma blenorrhagica is seen in: \nSelect and explain. \nA. Ankylosing spondylitis, B. Gouty arthritis, C. Reactive arthritis, D. Psoriatic arthritis', 'role': 'user'}, {'content': "Answer: C \nExplanation: (Reactive arthritis): Ref: 1997 - H, 754-CMDT-09 (2114-H17th)Reactive arthritis: (Reiter's syndrome)Clinical triad: - Urethritis, conjunctivitis (less commonly uveitis), mucocutaneous lesions and aseptic arthrit is.* The characteristic skin lesions keratoderma blenorrhagica consist of vesicles that become hyperkeratotic, ultimately forming a crust before disappearing. They are most common on the palm and soles* Lesions on the glans penis, termed circinate balanitis are common", 'role': 'assistant'}]