Hi, I am a 1st year UG student. I came across a case today where the patient had cannabis (bhang ki goli) 18 days ago. Since then he is suffering from anxiety and has started to come across negative thoughts. His pulses, body temperature and blood pressure is normal. His Vitamin D3 and B12 are also in normal range. Please help in diagnosis of the patient. I am not going to alter or prescribe any medications but I want to learn what diagnosis should I follow and medicine to prescribe. Your help will be highly appreciated.