Which of the following are indicators of drug use?

Indicators of drug use often manifest through observable physical signs, specific odors associated with certain substances, and the presence of paraphernalia commonly used to consume drugs. These indicators include things such as unusual behavior, bloodshot eyes, or changes in hygiene and grooming. The smell of substances, whether it be from the drugs themselves or residual odors from smoking, can also offer clues. Furthermore, paraphernalia such as pipes, needles, or bags can point to a person's drug use.

While physical appearance and activity levels, sleep patterns and appetite changes, and communication skills and social interactions can certainly be impacted by drug use, they are more indirect indicators. The most definitive signs are often the physical evidence and substances that can be directly observed or smelled, making the presence of these types of signs and paraphernalia the most clear-cut indicators of drug use.