This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Brain Hemorrhage, Subject name: Medicine
[{'content': 'Muscle tone increasing in patient trying to relax the muscles is seen in? \nSelect and explain. \nA. Paratonia, B. Myotonia, C. Spasticity, D. Rigidity', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Muscle tone increasing in patient trying to relax the muscles is seen in Paratonia. Paratonia (gegenhalten) is increased tone that varies irregularly in a manner seemingly related to the degree of relaxation, is present throughout the range of motion and affects flexors and extensors equally; it usually results from disease of the frontal lobes. Paratonia can be distinguished from spasticity by observing a lack of exaggerated deep tendon reflexes and a lack of a clasp-knife response. It can be distinguished from Parkinsonian (aka "lead-pipe") rigidity in that the amount of resistance in Parkinsonian rigidity does not vary with the velocity of the movement.', 'role': 'assistant'}]