Definition: Drug addiction, also known as substance use disorder (SUD), is a chronic, relapsing brain disease characterized by compulsive drug seeking, continued use despite harmful consequences, and long-lasting changes in the brain. It is both a complex brain disorder and a mental illness. Â Types of Addictive Substances 1. Opioids: Heroin, …
DeepakRajput 
Central Nervous System (CNS) Stimulants: Definition, Classification, Mechanism of action, uses and Side effects
Definition CNS stimulants are a class of drugs that enhance the activity of the brain and spinal cord, leading to increased alertness, energy, and attention. They can affect various neurotransmitters and are used therapeutically for conditions such as attention deficit hyperactivity disorder (ADHD), narcolepsy, and certain cases of depression. Â Classification …
