Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier
WebMD

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started
My Medicine
WebMD

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion
    WebMD

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community
    WebMD

    Community

    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Substance Abuse and Addiction Health Center

Font Size
A
A
A

Signs of Drug Abuse - Topic Overview

What are the signs of drug abuse and dependence?

The signs of drug abuse and dependence depend on the drug and the person using the drug. Behaviors that may be signs of a drug problem include:

  • Changes in sleeping or eating habits, less attention to dressing and grooming, or less interest in sex.
  • Up and down moods, a mood or attitude that is getting worse, or not caring about the future.
  • Anger toward others or treating others badly.
  • Sneaky behavior, lying, or stealing.
  • Poor family relationships, or relationships that are getting worse.
  • New problems at work or school, or problems with the law.
  • Dropping old friends and activities, finding new friends, and not wanting old friends to meet them.

Having these signs doesn't always mean a person is using drugs. The behavior could be because of work or school stress, or it could be a sign of depression or another medical problem. But behavior changes like these are common in people who abuse drugs.

Physical signs of drug abuse and dependence include:

  • Red eyes, a sore throat, a dry cough, and feeling tired.
  • Needle marks on the arm or other area of the body.
  • Small, "pinpoint" pupils in the eyes.
  • Losing weight without trying to, or not feeling like eating.
  • Changes in sleep behavior, such as not sleeping as well.
  • Seeing things that don't exist (hallucinations).

WebMD Medical Reference from Healthwise

Last Updated: 2/, 014
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
1
Next Article:

Signs of Drug Abuse Topics

Today on WebMD

child ignored by parents
Slideshow
prescription pain pills
Article
 
Woman experiencing withdrawal symptoms
Article
Teen girl huddled outside house
Article
 
Man with glass of scotch
Article
overturned shot glass
Article
 
assortment of medication
Article
Depressed and hurting
Article