| Term 
 | Definition 
 
        | An extremely potent and dependence-producing stimulant drug derived from the coca leaf. |  | 
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        | Term 
 | Definition 
 
        | Hallucinatory behavior produced by chronic cocaine or amphetamine abuse, in which the individual feels insects or snakes crawling either over or under the skin. |  | 
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        | Term 
 | Definition 
 
        | A set of symptoms, including hallucinations, paranoia, and disordered thinking, produced by the chronic use of cocaine. |  | 
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        | Term 
 | Definition 
 
        | A phenomenon in the brain that produces a heightened sensitivity to repeated administrations of some drugs, such as cocaine. This heightened sensitivity is the opposite of the phenomenon of tolerance. |  | 
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        | Term 
 | Definition 
 
        | The form of cocaine that is inhaled (snorted) or injected into the bloodstream. |  | 
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        | Term 
 | Definition 
 
        | A smokable form of cocaine. |  | 
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        | Term 
 | Definition 
 
        | A smokable form of cocaine. |  | 
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        | Term 
 | Definition 
 
        | Shortened name for dextroamphetamine, a potent form of amphetamine marketed under the brand name Dexedrine. |  | 
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        | Term 
 | Definition 
 
        | A type of amphetamine once marketed under the brand name Methedrine. Users refer to it as meth, speed, or crank. |  | 
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        | Term 
 | Definition 
 
        | A family of ephedrine-based stimulant drugs. |  | 
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        | Term 
 | Definition 
 
        | A set of symptoms, including hallucinations, paranoia, and disordered thinking, resulting from high doses of amphetamines. |  | 
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        | Term 
 | Definition 
 
        | A smokable form of methamphetamine hydrochloride. It is often referred to as crystal meth because of its quartz-like appearance. |  | 
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        | Term 
 
        | attention-deficit/hyperactivity disorder (ADHD) |  | Definition 
 
        | A behavioral disorder characterized by increased motor activity and reduced attention span. |  | 
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