Case Conceptualization In this section attend to the various aspects of the pharmacology of marijuana. This is key in that you are using a biological lens of pharmacology to understand the factors causing the problem (etiology) as well as what is maintaining the problem. This can include factors from neuroanatomy that maintain motivation, reinforcement such as role of dopamine and other biological factors influencing craving, intoxication, withdrawal, tolerance, etc. I would also direct the reader's attention to the route of entry (absorption), distribution, and elimination of marijuana