Substance Abuse involves the overuse or misuse of substances that can cause bodily harm, including alcohol, illicit drugs, prescription medication, and other chemicals. Individuals suffering from substance abuse may feel dependent on continued use despite the negative consequences of use (e.g., hangovers, cost, missing work or school, impaired relationships) and may experience difficulty regulating the frequency that they use such substances. Symptoms such as depression, anxiety, and withdrawal discomfort may manifest as a result of prolonged use. Further, some substances eventually create triggers for negative interactions with friends and family. Continued use may lead to life-threatening conditions.