This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous System, Subject name: Pathology
Painless burn in hand is a characteristic feature of? 
Select and explain. 
A. Thalamic syndrome, B. Syringomyelia, C. Cord compression, D. SLE
B: Syringomyelia
Answer: B: Syringomyelia 
Explanation: Ans is 'b' i.e. Syringomyelia * In Syringomyelia, there sensory deficit in upper extrimities in the form of loss of pain and temperature sensations with touch and vibration being intact.