physically hazardous (e.g., driving a car; playing certain sports; performing manual work
activities, including operating machinery). Ar guments with spouses or parents over the
use of cannabis in the home, or its use in th e presence of children, can adversely impact
family functioning and are common features of  those with cannabis use disorder. Last, in-
dividuals with cannabis use disorder may continue using despite knowledge of physical
problems (e.g., chronic cough related to smoking) or psychological problems (e.g., exces-
sive sedation or exacerbation of other ment al health problems) associated with its use.
Whether or not cannabis is being used for legitimate medical reasons may also affect
diagnosis. When a substance is taken as indicated for a medical condition, symptoms of