Some pamphlets and books have lists of signs and symptoms of drug use. They often include changes in school and work attendance, mood swings, changes in appearance, excessive tiredness, lack of appetite etc. The problem is that many of these things may be caused by things other than drug use and are relatively normal behaviors. Unless you happen to be with someone while they are intoxicated or high on drugs you may not see any clear signs and symptoms. Even behavior that seems like intoxification could be due to other things such as mental health problems or shock.
A danger with following lists of signs and symptoms is that you will jump to the wrong conclusion. If you feel that there is something wrong with a person or that they are acting strangely talk to them about what is going on in their life. Trying to spot signs and symptoms of drug use is no substitute for good communication.
The source of above material is with the permission of DrugScope. For direct Link to this page: http://www.drugscope.org.uk/resources/faqs/faqpages/what-are-the-signs-of-drug-use.htm
Note: You can find information about specific drugs, their effects, appearance and brief history by visiting the
Info about Drugs.