This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Special topics, Subject name: Anatomy
Irresistible desire to do something without any provocation is called 
Select and explain. 
A. Phobia, B. Impulse, C. Delirium, D. Delusion
B: Impulse
Answer: B: Impulse 
Explanation: IMPULSE Impulse is an irresistible desire to do something without any provocation. There are many types of impulses- kleptomania, pyromania, mutilomania, etc Ref: FORENSIC MEDICINE AND TOXICOLOGY Dr PC IGNATIUS THIRD EDITION PAGE 360