This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Toxicology - 2, Subject name: Forensic Medicine
[{'content': 'Tactile hallucinations are noticed in \nSelect and explain. \nA. Parkinsonism, B. Chronic depression, C. Chronic cocaine poisoning, D. Acute barbiturate poisoning', 'role': 'user'}, {'content': "Answer: C \nExplanation: Magnan's Syndrome / Cocaine Bugs This is seen in cocaine addicts. It is a type of tactile hallucination. There is a feeling as if grains of sand are lying under the skin or small insects are creeping on the skin giving rise to itching sensation (formication).", 'role': 'assistant'}]