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A family of mental health disorders · common gateways to addiction

Other common disordersADHD, chronic insomnia and eating disorders: why are they linked to addiction?

Reviewed by: Dr. Mahmoud El-Sawy Last updated: September 28, 2026 11 min read
The short answer

This family brings together common disorders that do not belong to one medical category, chiefly attention-deficit hyperactivity disorder (ADHD), a developmental disorder that begins in childhood, and chronic insomnia, meaning difficulty sleeping three nights a week or more for three months, along with eating disorders. What unites them in the Eradah guide is one thing: their strong link to addiction, since many people turn to substances or sleeping pills to ease their symptoms, and a temporary fix becomes a bigger problem.

  • Untreated ADHD raises the risk of substance use disorders in young people, according to the US National Institutes of Health drug research institutes.
  • Cognitive behavioral therapy for insomnia is the recommended first step in treating chronic insomnia in adults.
  • Both disorders can be treated without relying on substances that cause addiction.

Why have we grouped these disorders into one family?

Medically, ADHD belongs to the neurodevelopmental disorders, while insomnia is classified among the sleep-wake disorders. But in addiction treatment clinics the two meet often, which is why we gave them their own family in the mental health guide.

The common thread is that each of these disorders causes an exhausting daily struggle, and the person looks for any quick way to ease it: a young person who is distracted and impulsive may find temporary calm in hashish or temporary focus in stimulants, and someone with insomnia may find quick sleep in alcohol or sedatives. In both cases the story begins with an attempt at “self-medication” and sometimes ends in a dependence that doubles the original problem.

This group also includes eating disorders, such as anorexia nervosa, bulimia nervosa and binge-eating disorder. These are serious disorders that affect body and mind together and may overlap with substance use, but they are treatable, and the earlier treatment starts the better.

The relationship runs in both directions: the disorder can lead to substance use, and substance use and withdrawal make insomnia and inattention worse, so the cycle goes round. Breaking this cycle is the essence of what we call dual diagnosis.

ADHD in this family

The US National Institutes of Health define it as a neurodevelopmental disorder marked by three features: inattention, such as difficulty concentrating and organizing; hyperactivity, such as fidgeting and talking a lot; and impulsivity, such as interrupting and difficulty waiting. Symptoms begin in childhood and usually continue into adolescence and adulthood.

Many adults were never diagnosed as children, so they spent years being called lazy, careless or “badly brought up,” while they actually had a real, treatable disorder. You will find the details in the guide to ADHD.

Full details are in the ADHD guide.

Chronic insomnia in this family

Everyone has difficult nights, especially under stress, and this is “acute insomnia,” which usually goes away when its cause does. Chronic insomnia, however, is defined by the US National Heart, Lung, and Blood Institute as difficulty sleeping that occurs three or more nights a week, lasts more than three months, and is not fully explained by another illness.

Chronic insomnia is more than “not sleeping enough”; it affects memory, concentration and mood, and is linked to a higher risk of high blood pressure, heart disease and diabetes. You will find the details in the guide to chronic insomnia.

Full details are in the chronic insomnia guide.

Types of other common disorders

Each disorder in this family has a full guide and its own pages. Here is a brief card for each:

Also known as: ADHD

A developmental disorder that begins in childhood and continues into adulthood for many people. It increases the risk of addiction if left untreated.

Category
Neurodevelopmental disorders
How common
One of the most common developmental disorders in children
Typical onset
Childhood; symptoms appear before age 12
Link to addiction
Strong

When to seek help: if distractibility and impulsivity keep affecting school, work or relationships.

Also known as: sleep disorder

Persistent difficulty falling or staying asleep for three months or more, and a common route into the misuse of sleeping pills.

Category
Sleep disorders
How common
Very common, and increasing with age
Typical onset
At any age, often after a period of stress
Link to addiction
Strong

When to seek help: if trouble sleeping continues three nights a week for three months, or you have come to depend on a sleeping pill without a doctor.

Eating disorders

Eating disorders

Also known as: anorexia nervosa, bulimia nervosa

Serious disturbances in a person's relationship with food and body image, including anorexia nervosa, bulimia nervosa and binge eating episodes.

Category
Feeding and eating disorders
How common
About 18 million people worldwide (2023)
Typical onset
Usually adolescence and early adulthood, and may begin in childhood
Link to addiction
Strong

When to seek help: if food, weight or body shape dominates your thoughts and life, and immediately if there is fainting, palpitations or thoughts about death.

Autism

Autism Spectrum Disorder (ASD)

Also known as: autism spectrum disorder

A difference in brain development that affects communication, behavior and the senses. Early support makes a big difference.

Category
Neurodevelopmental disorder
How common
About 1 in 127 people worldwide
Typical onset
Usually in the first two years
Link to addiction
Moderate

When to seek help: if a child loses skills they had gained, or has seizures or self-harm, or if a teenager or adult has thoughts about death.

Tourette syndrome

Tourette syndrome

Also known as: Tourette's disorder

Motor and vocal tics that begin in childhood, peak around age ten and often ease in adolescence.

Category
Neurodevelopmental disorder (tics)
How common
3 to 9 per 1,000 children
Typical onset
Between 4 and 6 years
Link to addiction
Weak

When to seek help: if tics interfere with school or cause pain, or are accompanied by anxiety, depression or substance use.

Hysteria

Functional neurological disorder (conversion disorder)

Also known as: conversion disorder

Real neurological symptoms such as paralysis and seizures without structural damage, caused by a problem in the way the nervous system functions.

Category
Functional neurological disorder
How common
Among the most common conditions seen in neurology clinics
Typical onset
Late childhood to early adulthood
Link to addiction
Weak

When to seek help: if weakness or a seizure appears for the first time, if symptoms interfere with life, or if depression accompanies them.

Depersonalization

Depersonalization-derealization disorder

Also known as: derealization

A persistent feeling of detachment from oneself or the world, with intact awareness that it is not real. It improves with treatment.

Category
Dissociative disorder
How common
About 1 to 2% as an ongoing disorder
Typical onset
Average age of onset 16
Link to addiction
Moderate

When to seek help: if the feeling lasts for weeks or disrupts your life, began after substance use, or comes with depression.

Kleptomania

Kleptomania

Also known as: compulsive stealing

An irresistible urge to steal things the person does not need, followed by guilt and shame. The motive is neither need nor profit.

Category
Impulse-control disorders
How common
Between 0.3% and 0.6% of people
Typical onset
Usually adolescence or early adulthood
Link to addiction
Strong

When to seek help: if stealing keeps happening despite attempts to stop, and immediately if there are any thoughts of harming yourself.

Dissociative identity disorder

Dissociative Identity Disorder

Also known as: multiple personality disorder

Two or more distinct identities with gaps in memory, strongly linked to severe, repeated trauma in childhood.

Category
Dissociative disorders
How common
About 1.5% in one small study
Typical onset
Childhood; diagnosis is often delayed
Link to addiction
Moderate

When to seek help: if memory gaps or “lost time” keep recurring, and immediately if there is any self-harm.

Psychosomatic disorders

Psychosomatic Disorders

Also known as: psychosomatic illnesses

Real physical symptoms and illnesses in which psychological stress plays a major part in their onset or worsening, such as irritable bowel syndrome.

Category
Interaction of mind and body
How common
Common, and not counted as a single category
Typical onset
Any age, increasing with stress
Link to addiction
Moderate

When to seek help: if symptoms recur with stress and tests do not explain them, after physical causes have been ruled out first.

What is the difference between ADHD and chronic insomnia?

Comparison of the two disorders in the family
Point of comparisonADHD (attention-deficit/hyperactivity disorder)Chronic insomnia
Medical classificationNeurodevelopmental disorderA sleep-wake disorder
Typical onsetIn childhood, and may be discovered lateAt any age, and increases with stress and advancing age
Core of the problemConcentration, organization and impulse controlDifficulty falling asleep or staying asleep
Most commonly misused substancesHashish, stimulants and nicotineAlcohol, sedatives and sleeping pills
First-line treatmentBehavioral therapy and school or work support, and medication determined by the doctorCognitive behavioral therapy for insomnia and regulating sleep habits
Infographic comparing ADHD and chronic insomnia in 5 aspects: medical classification, onset, core of the problem, most commonly misused substances, first-line treatment
What is the difference between ADHD and chronic insomnia?

The two disorders sometimes overlap: many people with ADHD complain of sleep problems, and chronic lack of sleep alone can cause distraction and irritability that resemble ADHD symptoms. That is why the doctor always asks about sleep before judging attention.

Are ADHD medications and sleeping pills “drugs”?

This question worries many families. Some ADHD medications, such as methylphenidates, are controlled drugs dispensed by prescription, as are many sleeping pills and sedatives. Using them under the supervision of a doctor who follows the case is completely different from taking them without a prescription, in larger amounts than prescribed, or for non-therapeutic purposes.

What are the shared risks if the two disorders are left untreated?

  • Decline in school and work, and difficulty holding a steady job.
  • A higher risk of accidents, especially road accidents from impulsivity or drowsiness.
  • Depression and anxiety, both of which increase with lack of sleep and repeated frustration.
  • Repeated family and marital conflicts and misunderstanding from those around.
  • Misuse of alcohol, substances and sleeping pills, then dependence on them.
  • Low self-confidence and a constant feeling of falling short.

Early treatment greatly reduces these risks. You will find details of the complications on the pages for the harms of ADHD and the harms of chronic insomnia.

Can they be treated without relying on addictive substances?

Yes. For chronic insomnia, the American College of Physicians recommends cognitive behavioral therapy for insomnia as the first step for adults. It is a structured program that resets sleep habits and the anxious thoughts tied to sleep, with medication coming afterward when needed and for periods the doctor determines. For ADHD, treatment combines behavioral interventions, parent training and school support, and stimulant or non-stimulant medication chosen by the doctor according to the case and the history of substance use.

At Eradah we pay particular attention to people who have one of these disorders together with substance use, and we make one integrated plan that treats the addiction and the underlying disorder together. Details are in ADHD treatment and chronic insomnia treatment.

How can the family help their son or partner?

Families often treat ADHD as “naughtiness” or “carelessness,” and insomnia as “being spoiled” or “staying up by choice,” so they resort to blame and punishment. The result is usually more tension, and the person looking for a secret solution away from the family, which may be a substance or a medication taken from a friend.

  1. Treat the symptoms as a health problem that deserves assessment, not as a flaw in character.
  2. Help build a steady routine for sleep, waking, studying or work, with fewer screens at night.
  3. Keep an eye on medications in the home, and do not share your medication with anyone, however harmless it seems.
  4. Praise effort and small progress; repeated frustration is a main fuel for substance use.
  5. If you notice substance use or dependence on a sleeping pill, ask for an assessment that treats both together instead of focusing on only one.

When should you seek help from a psychiatrist?

  • If trouble sleeping lasts for many weeks and begins to affect your work or mood.
  • If you can no longer sleep without alcohol, a sedative or a sleeping pill taken without medical follow-up.
  • If teachers or family notice persistent distraction and impulsivity in the child at home and at school alike.
  • If you are an adult who has struggled since childhood with disorganization, forgetfulness, impulsivity and repeated unfinished starts.
  • If any substance use appears, or use of other people’s medications to concentrate or sleep.

This list is for awareness and is not a diagnosis; an accurate diagnosis needs a specialist assessment.

Suicidal thoughts or danger to self? Get help now

  • Talk of wanting to die or of being a burden on others
  • Severe hopelessness after months of insomnia and exhaustion
  • Saying goodbye to loved ones or giving away important belongings
  • Mixing sleeping pills or sedatives with alcohol or other substances
  • Severe drowsiness, difficulty rousing the person, or slow breathing after taking sleeping pills
  • Agitation, severe suspicion, or not sleeping for days after using stimulants

Stay with the person and listen without blame, and keep medications and dangerous objects out of their reach in general. Call an ambulance (123) or go to the nearest emergency room, and you can call the mental health support line 16328, available around the clock. With severe drowsiness or slow breathing, place the person on their side until the ambulance arrives.

Ambulance 123 Mental health support line 16328
Frequently asked questions

Frequently asked questions about other common disorders

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Why are ADHD and insomnia in one family?

Because they are among the disorders most linked to addiction, not because they are medically similar; many people turn to substances or sleeping pills to ease their symptoms, and substance use in turn makes them worse.

Does ADHD continue into adulthood?

Yes. The US National Institutes of Health note that symptoms begin in childhood and usually continue into adolescence and adulthood, although their form changes with age.

When does insomnia become chronic?

When trouble sleeping occurs three or more nights a week and lasts more than three months, and is not fully explained by an illness or another cause.

Does treating ADHD with medication cause addiction?

Using a prescribed medication under a doctor’s follow-up differs from misusing it, and the evidence does not suggest that proper treatment raises the risk of addiction, while untreated ADHD is linked to a higher risk. The doctor chooses the appropriate medication according to the case and the history of substance use.

Why do some people with insomnia turn to hashish?

It may give a temporary feeling of drowsiness, but with continued use it disrupts sleep, and severe insomnia appears when it is stopped, so the person finds themselves unable to sleep without it.

Can insomnia be overcome without sleeping pills?

Yes. Cognitive behavioral therapy for insomnia is the recommended first step in treating chronic insomnia in adults, and it works for many people without the need for long-term sleeping pills.

Does a glass of alcohol before bed solve insomnia?

No. Alcohol may speed falling asleep, but it makes sleep broken and less restful in the second half of the night, and over time it raises the risk of dependence.

Is taking Ritalin to study without a prescription dangerous?

Yes. Taking stimulants prescribed for someone else without a medical assessment can cause palpitations, insomnia and anxiety, may lead to misuse, and is also against the law because they are controlled drugs.

Can lack of sleep cause symptoms like ADHD?

Yes. Chronic sleep deprivation can cause distraction, irritability and impulsivity, which is why the doctor assesses sleep before diagnosing ADHD.

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