This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Painless burn in hand is a characteristic feature of : 
Select and explain. 
A. Syringomgelia, B. Thalamic syndrome, C. Cord compression, D. Systemic-lupus-ehromatosis
A: Syringomgelia
Answer: A: Syringomgelia 
Explanation: Answer is A (Syringomyelia): Syringomyelia is characterized by 'dissociative anaesthesia' with sensory loss to sensations of temperature and pain while sensation of 'touch' is preserved. This leads to multiple burns and non healing ulcers over the hand and forearms.