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Family Guide · Visible signs

What a Person with Addiction Looks Like: Eyes, Face and BodyWhat changes in appearance with drug use, how it differs by substance, and why you may see nothing even when there is a problem

Reviewed by: Dr. Mahmoud El-Sawy Last updated: October 4, 2026 5 min read
The short answer

There is no single look for a person with addiction, and many look normal for a long time. But signs do appear depending on the substance: red eyes with hashish, very small pupils with opioids such as heroin and tramadol, followed by dilated pupils during withdrawal, and weight loss, tooth decay and sleeplessness with stimulants such as shabu. Over time, neglect of hygiene and appearance becomes more common. Appearance alone is not enough to judge, but blue lips, slow breathing and loss of consciousness are an emergency that calls for an ambulance (123).

  • The eyes are one of the clearest indicators, but they are affected by many causes other than drugs.
  • Physical changes increase with the length and amount of use.
  • Neglect of appearance is a sign NIDA lists among the common warning signs.

“People say you can tell an addict by his face, but my son looks completely normal.” This sentence sums up a common myth. The image of the thin person with sunken eyes mostly belongs to advanced stages, while many people look normal for months or years. Even so, there are visible signs that a family should know about, as long as they are read as part of the whole picture.

Is There a Single Look for a Person with Addiction?

No. How a person with addiction looks varies with the type of substance, the amount, the length and method of use, and with general health and nutrition. Someone who uses small amounts or has used for a short time may show no signs at all. That is why the US National Institute on Drug Abuse (NIDA) lists among the common signs lack of attention to appearance and changes in eating and sleeping habits, along with changes in friends and declining school performance, meaning appearance is part of a wider pattern. You will find the behavioral and financial signs in the guide Signs of Drug Use.

What a Person’s Eyes Look Like in Addiction: What Do They Reveal?

The eyes are among the things families notice most, because some substances directly affect the pupil and blood vessels:

  • Red eyes: a common effect of using hashish, according to the US medical encyclopedia MedlinePlus, along with dry mouth and slowed reactions.
  • Very small pupils: with opioids, and in a heroin overdose reaching very small “pinpoint” pupils, according to MedlinePlus.
  • Dilated pupils: a symptom of late opioid withdrawal, along with runny nose, yawning and chills.
  • A heavy gaze and half-closed eyelids: with sedatives and opioids.

What a Person with Addiction Looks Like by Type of Substance

Common visible signs for three groups of substances
Stimulants (shabu and Captagon)Opioids (heroin and tramadol)Hashish
EyesDilated pupils and a tense gazeSmall pupils during the effect, dilated during withdrawalRedness and heavy eyelids
Weight and appetiteLoss of appetite and clear weight lossWeight loss with neglect and long-term useOften increased appetite
Mouth and teethTooth decay and tooth loss over timeDry mouth and constipationDry mouth
Sleep and energyDays without sleep, then collapse and lethargyDrowsiness and frequent dozing offLethargy and slowness
SkinScratch wounds and slow healingInjection marks with needle useOften no distinctive signs
Infographic: What a person with addiction looks like by type of substance: eyes, weight and appetite, mouth and teeth, sleep and energy, skin
A simple comparison of the common visible signs for three groups of substances. They may not all appear in every person who uses.

NIDA affirms that tooth decay and tooth loss, known as “meth mouth,” are long-term effects of using methamphetamine, known in Egypt as shabu. You will find each substance’s features in detail in the guides to heroin, tramadol and Captagon.

The Face and Skin of a Person with Addiction After Long-Term Use

Over time, more general changes appear that are not specific to any one substance: pale or yellowish skin from poor nutrition and lack of sleep, dark circles, pimples or slow-healing sores, and neglect of shaving, clothing and hygiene. With injection use, a person may wear long sleeves even in the heat to hide needle marks. Many of these changes improve after stopping, with nutrition and sleep.

Why Do Some People with Addiction Look Completely Normal?

Because the use may be at an early stage, in amounts the body tolerates after getting used to them, or at times when the family does not see him. Some people who use stimulants or tramadol seem more energetic and productive at first, which reassures their parents. So the more important question is not “does he look like an addict?” but “have his behavior, sleep, money, studies or work changed?”

When Is Appearance a Sign of Immediate Danger?

You Noticed Signs in His Appearance: What Do You Do?

Do not begin by accusing him based on appearance. Record the changes you noticed and their dates, and talk to him at a calm time about your worry and about specific facts. If physical signs come together with behavioral ones, ask for a specialist assessment. At Eradah the first consultation is free and confidential, and the family can begin it alone, after which the team decides whether detox and residential treatment for men, or outpatient follow-up, is the better fit.

Frequently asked questions

Frequently asked questions about what a person with addiction looks like

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What Does a Person with Addiction Look Like?

There is no single look. He may look completely normal, or signs may appear depending on the substance, such as red eyes, small pupils, weight loss and tooth decay, along with neglect of appearance over time.

How Can I Tell Addiction from the Eyes?

Redness may appear with hashish, very small pupils with opioids, and dilated pupils with stimulants or opioid withdrawal. But many other causes change the eyes, so do not judge by them alone.

Does the Face of a Person with Addiction Change?

With long-term use, paleness, dark circles, pimples, slow-healing sores and weight loss may appear, and many of these improve after stopping.

Can a Person Have an Addiction and Look Normal?

Yes, especially at the beginning or with amounts his body tolerates. Changes in behavior, sleep and money are more reliable than appearance.

What Does a Person Who Uses Shabu Look Like?

Often thinness and loss of appetite, days without sleep, dilated pupils, scratch wounds, and tooth decay and tooth loss over time.

What Does a Person Who Uses Hashish Look Like?

Red eyes, heavy eyelids, dry mouth, slowed reactions and increased appetite, and some people may show no distinctive signs.

When Is a Person’s Appearance an Emergency?

With blue lips, very slow breathing, loss of consciousness, seizures, or a very high temperature with agitation. Call an ambulance (123) immediately.

Medical reviewDr. Mahmoud El-Sawy, Consultant Psychiatrist and Addiction Specialist

This page was written by Eradah's editorial team and reviewed by a specialist doctor under the medical review policy. Last reviewed: October 4, 2026. The content is for awareness and does not replace a doctor's consultation.

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