Cocaine
What are there signs of cocaine use? Have you wondered if someone you love is using cocaine? Cocaine is a very popular drug known for its quick rush and production of energy. 
Users may suddenly seem excited and act more confident or just have a better sense of well-being. Disappearing for a minute (even for just a quick bathroom break) and then returning in a very different mood can be a sign of someone using cocaine. They may be more talkative, sexually excited, and more energetic overall after using. If individuals are using cocaine, they generally won’t have an appetite for food and their sleep pattern will be irregular.
Another obvious sign of cocaine use is small traces of white powder around a person’s nose. However, while many people snort cocaine, thus leaving the powder, some will dissolve and inject or ingest it. Further, if an individual’s eyes are dilated and the pupils are overly sensitive to light or they have runny noses and/or nosebleeds (due to damage to the inside of the nose) cocaine use may be present. Some other things to look for if cocaine use is suspected are needle marks on arms, legs, hands, feet or neck and discarded syringes left around the place cocaine was consumed. Also, due to the short lasting nature of cocaine, users may leave periodically so they can use more cocaine.