Marijuana Abuse: The excessive use of marijuana with associated psychological symptoms and impairment in social or occupational functioning.Marijuana Smoking: Inhaling and exhaling the smoke from CANNABIS.Cannabis: The plant genus in the Cannabaceae plant family, Urticales order, Hamamelidae subclass. The flowering tops are called many slang terms including pot, marijuana, hashish, bhang, and ganja. The stem is an important source of hemp fiber.Child Abuse: Abuse of children in a family, institutional, or other setting. (APA, Thesaurus of Psychological Index Terms, 1994)Child Abuse, Sexual: Sexual maltreatment of the child or minor.Dronabinol: A psychoactive compound extracted from the resin of Cannabis sativa (marihuana, hashish). The isomer delta-9-tetrahydrocannabinol (THC) is considered the most active form, producing characteristic mood and perceptual changes associated with this compound.Substance-Related Disorders: Disorders related to substance abuse.Elder Abuse: Emotional, nutritional, financial, or physical maltreatment, exploitation, or abandonment of the older person generally by family members or by institutional personnel.