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: Forensic Medicine
Magnan's symptoms is - 
Select and explain. 
A. Illusion, B. Delusion, C. Formication, D. Depersonalization
C: Formication
Answer: C: Formication 
Explanation: Magnan's symptoms is tactile hallucination (fornication) i.e. feeling of bugs crawling under the skin.