A person who is excessively active, excited, and talkative, has dilated pupils, and goes for long periods without eating or sleeping may be under the…

The combination of symptoms—excessive activity (hyperactivity), excitement, talkativeness, dilated pupils (mydriasis), and prolonged periods without eating or sleeping—are hallmark indicators of central nervous system (CNS) stimulant intoxication. Amphetamines are a potent class of CNS stimulants that increase alertness, attention, and energy by elevating levels of dopamine and norepinephrine in the brain. This neurochemical action directly produces the described behavioral and physiological effects, such as euphoria, suppressed appetite, and insomnia. The described cluster of signs is most specifically and accurately attributed to amphetamine use over the other options.

A. Marijuana: This substance is primarily a depressant and hallucinogen; it typically causes relaxation, increased appetite, and constricted or red eyes, not hyperactivity or dilated pupils.

C. Narcotics: These are CNS depressants (opioids) that cause drowsiness, apathy, and constricted pupils (miosis), which are opposite to the symptoms described.

D. Alcohol: As a CNS depressant, alcohol causes impaired coordination, drowsiness, and slurred speech, not the sustained hyperactivity, excitement, and sleeplessness associated with stimulants.

1. ASIS International. (2021). Protection of Assets: Security Management. Alexandria

VA: ASIS International. The section on "Substance Abuse in the Workplace" within the Human Resources chapter details the signs and symptoms of various drug classes. It identifies hyperactivity

euphoria

talkativeness

and insomnia as key indicators of stimulant abuse

which security managers must be able to recognize as a potential workplace issue.

2. National Institute on Drug Abuse (NIDA). (2018

June). Prescription Stimulants DrugFacts. U.S. Department of Health and Human Services

National Institutes of Health. This publication states that at high doses

prescription stimulants like amphetamines can lead to "dangerously high body temperature

an irregular heartbeat... and paranoia." Short-term effects include "increased alertness

attention

and energy

" "decreased appetite

" and physical signs such as "dilated pupils."

3. Julien

R. M.

Advokat

C. D.

& Comaty

J. E. (2011). A Primer of Drug Action: A Comprehensive Guide to the Actions

Uses

and Side Effects of Psychoactive Drugs (12th ed.). Worth Publishers. Chapter 6

"The Stimulants

" describes the effects of amphetamines

including "insomnia

restlessness

agitation

excitement

and talkativeness" (p. 154) and physiological signs such as "pupillary dilation" (p. 153). This is a standard university-level pharmacology text.