Drug abuse refers to the compulsive and harmful use of substances like cannabis, cocaine, tramadol, codeine, and rohypnol, leading to addiction, health issues, and sometimes death. Teenagers and secondary school students are particularly vulnerable to drug abuse due to peer pressure and social situations. Drug abuse has negative physiological effects like increased heart rate and vomiting, as well as psychological impacts like anxiety and nightmares. Treatment involves behavioral counseling, medication, and long-term prevention programs in families, schools, and communities.