This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Alcohol-Related Disorders, Subject name: Psychiatry
Alcoholic patient feels like insects running over him, it is known as- 
Select and explain. 
A. Formication, B. Delusion, C. Dementia, D. Delirium
A: Formication
Answer: A: Formication 
Explanation: Ans. is 'a' i.e., Formication Tactile hallucination/hantic hallucination (Hallucinations of touch)o Cutaneous perception may very vague tingling or sensations of temperature of perceptions experienced as being held, hit or caressed.o Tactile hallucinations are seen in schizophrenia.o A special type of tactile hallucination, i.e., formication, where there is perception of insect carwling under the skin, is characterstic of cocaine poisonning and may also occur in alcohol withdrawal