system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Chronic cocaine abuse have following features except:
assistant
The correct answer is  Cocaine : Fatal dose: 1g oral/ 20 mg IV Chronic cocaine abuse: a) Ulceration of nasal septum / palate b) Peripheral gangrene c) Black color staining of tongue d) Cocaine bugs/ formication Chronic cannabis abuse: a. Amotivational syndrome b. Run amok: homicidal impulse/stabbing spree