This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other Rheumatic Diseases, Subject name: Orthopaedics
[{'content': 'Sausage digits is seen in - \nSelect and explain. \nA. Lyme arthritis, B. Osteoarthritis, C. Psoriatic arthritis, D. None', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Psoriatic arthritis o Sausage digit refers to diffuse fusiform swelling of the digit due to soft tissue inflammation from underlying arthritis or dactylitis,o Causes are :-Psoriatic arthritisOsteomyelitisSickle cell anemiaSarcoidosisTubercular dactylitis (spina ventosa)", 'role': 'assistant'}]