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Khat guide · Symptoms

Khat addiction symptoms and signs of use

Reviewed by: Dr. Mahmoud El-Sawy Last updated: October 1, 2026 6-minute read
The short answer

The most noticeable signs of khat use are a bulge in one cheek from storing leaves, talkativeness and restless energy, then lethargy and insomnia after the session, along with poor appetite and constipation. Symptoms of khat addiction show up as daily sessions the person cannot cut down, spending that comes at the family's expense, continued use despite high blood pressure or stomach problems, and lethargy, low mood, and disturbing dreams on days without khat.

  • Chewing every day does not by itself mean addiction; the test is loss of control and continued use despite harm.
  • Many people do not seek help because they see khat as a social habit.
  • The final diagnosis is made by a specialist doctor.

Signs of khat use during a session

Khat is hard to hide during a session, yet it is easily hidden in plain sight: families see a long gathering and a lot of talking, and do not connect it with a stimulant. The following signs usually appear during the hours of chewing:

  • An obvious bulge in one cheek from stored leaves, and slow, continuous chewing.
  • Talkativeness, enthusiasm, excess confidence, and exaggerated elation.
  • Alertness and the ability to stay up late, with little sense of hunger or tiredness.
  • Sweating and palpitations, and drinking a lot of fluids because of a dry mouth.
  • A session that stretches for hours in the same place and with the same people.

Signs after the session

The Toxins review and the UK's FRANK service describe what follows once the effect wears off, which families often notice in the evening or the next morning:

  • Lethargy, loss of energy, and a wish to be alone.
  • Insomnia and trouble sleeping at night despite exhaustion.
  • Disturbing dreams and a slight tremor in the hands.
  • Low mood, or irritability and a short temper.
  • Persistent loss of appetite and constipation.

Physical signs of regular chewing

A patch where the leaves are stored

A white, thickened patch on the lining of the cheek, seen in about half of chewers according to the Toxins review.

Teeth and gums

Mouth inflammation and dental problems, as FRANK notes.

Blood pressure and pulse

High blood pressure that a doctor picks up in a routine check, and frequent palpitations.

Stomach and constipation

Heartburn, stomach pain, and chronic constipation that returns with the sessions.

Disturbed sleep

Repeatedly staying up into the late hours, followed by constant tiredness in the morning.

Weight loss

Eating little because of appetite suppression and delayed stomach emptying.

Infographic: signs of regular khat chewing: a patch where leaves are stored, teeth and gums, blood pressure and pulse, stomach and constipation, disturbed sleep, weight loss
Physical signs that appear with regular khat chewing

Behavioral signs

  • The session becomes a daily priority that appointments and work are arranged around.
  • Regular unexplained spending, or asking for money with varying excuses.
  • Frequent absence from home during session hours, or arriving late to work in the morning.
  • Bundles of wrapped twigs and green leaves, or leftover leaves in the car or the room.
  • Sharp defense of khat as “just a habit” or “not a drug” whenever it is discussed.

When is khat use an addiction? Diagnostic criteria

The same substance use disorder criteria in the DSM-5 diagnostic manual are applied to khat. A study of 400 khat users in Ethiopia, published in the journal Addiction in 2016, tested them and found they measure a real, coherent disorder similar to other substance use disorders. The Toxins review cites another study of khat chewers for the following rates for some of the criteria:

Rates of some dependence criteria among khat chewers in the study by Widmann and colleagues
CriterionShare who reported it
Withdrawal symptoms when stopping94%
Continued use despite health problems93٫9%
Wanting to cut down or stop78٫8%
Chewing more than intended72٫7%
Tolerance and needing a larger amount66٫7%

These are rates within a sample of users, not rates in the general population. Severity is counted by the number of criteria met within a year: two or three is a mild disorder, four or five moderate, and six or more severe, the same rule the US National Institute on Drug Abuse describes for stimulants in general.

How do khat signs differ from other substances?

Khat compared with substances whose signs may look similar
SubstanceWhat usually distinguishes it
KhatBulging cheek and leftover leaves, long sessions, and a calmer effect followed by lethargy.
Amphetamine and CaptagonStaying up late and stronger energy with no leaves, tablets or powder, and more obvious irritability.
Crystal meth (shabu)Days without sleep and rapid weight loss, with suspiciousness and hallucinations more common.
HashishRed eyes, increased appetite, and slowed movement, the opposite of khat's effect.

Telling them apart precisely is a doctor's job; khat is often combined with smoking or other stimulants, and specialized testing may be needed because rapid tests do not always detect khat, as we explain in how long khat stays in the body.

Signs of khat use in young people and teenagers

The Toxins review notes that chewing often starts at a young age and then becomes a regular pattern. Watch for repeated late returns home with unusual late nights and little eating, new friends who gather for hours in one particular place, or a drop in school performance with constant morning exhaustion. An early conversation is far more helpful than waiting until the habit becomes part of the person's identity.

Why is help sought late?

In the same Addiction study, only about a third of people with khat use disorder had ever sought help in their lives, and nearly all of them turned to friends and relatives rather than a specialist. The social nature of khat makes the person the last to see the problem. For this reason the family may be the one to take the first step, and you will find practical guidance in how to persuade someone to get treatment.

What should you do if you notice these signs?

  1. Do not bring it up during a session; choose a calm time on another day.
  2. Note what you observe about sleep, money, absences, and health, without searching their things or shaming them.
  3. Suggest a blood pressure check and a mouth and dental exam; this is a health step many people accept.
  4. If unfounded suspicions, hallucinations, or talk of self-harm appear, seek an urgent psychiatric assessment.
  5. Offer a practical alternative, such as a confidential consultation or a supervised reduction plan, and find the options in khat addiction treatment.

Danger signs after using khat: call ambulance (123) immediately

  • Chest pain or tightness, or a very fast or irregular heartbeat
  • A sudden severe headache, weakness or numbness on one side of the body, or difficulty speaking
  • Severe agitation or suspicions and hallucinations that push the person to harm themselves or others
  • Fainting or seizures
  • Thoughts of suicide or self-harm after stopping or during depression

Call ambulance (123) immediately. If the person is unconscious but breathing, place them on their side so they do not choke on vomit. Stay with them and do not leave them alone, do not give them food, drink or any medicine from the house, and tell the paramedics everything they took, especially if khat was taken with stimulants or other medications.

Call the ambulance 123
Frequently asked questions

Frequently asked questions about khat addiction symptoms

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How do I know my husband is chewing khat?

Look for signs appearing together: long, regular sessions, a bulging cheek and leftover leaves, late nights and insomnia, little eating, and unexplained spending. If you suspect it, start with a calm conversation and specialist advice.

What does a person look like after chewing khat?

During the session they seem energetic and talkative; after the effect wears off they are lethargic, tired, and have little appetite, and may have insomnia and irritability.

Does chewing every day mean addiction?

Not by itself; but daily chewing together with difficulty cutting down, continued use despite harm, and lethargy and depression on stopping are signs pointing to a substance use disorder.

Does khat cause aggression?

It can cause anxiety, irritability, and a short temper, especially after the effect wears off or with lack of sleep, and aggression may appear with episodes of mania or the rare psychosis.

What are the signs of khat-induced psychosis?

Unfounded suspicions of being followed or plotted against, hearing voices or seeing things that are not there, or strange grandiose ideas. This is a condition that calls for an urgent psychiatric assessment.

Does khat show up on a drug test?

Not every rapid test detects it reliably, and accurate detection needs a confirmatory test in a specialized lab.

Can someone chew khat without their family noticing?

Yes, especially if the sessions are held outside the home. Chronic insomnia, morning exhaustion, and eating little may be the first things to draw attention.

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