ADHD and Lying: Understanding Why It Happens and How to Help

Have you ever promised a friend you’d arrive in five minutes, even though you were still at home? Or maybe you’ve told your boss you were on track with a report when you actually forgot about it.

If you have ADHD, you might catch yourself telling these kinds of lies more often than you’d like. ADHD-related lying in adults can be linked to forgetfulness, impulsivity, and the fear of rejection or shame.

Understanding the ‘why’ behind lying can help you make different choices going forward. The first step is understanding what drives these responses, then learning how to recognize and manage triggers.

Why Do People with ADHD Lie?

For many ADHDers, the lies they tell aren’t about manipulation. 

Let’s take a closer look at some common reasons why people with ADHD lie.

Impulsivity and Blurting

People with ADHD sometimes respond impulsively.^[1] This can lead them to exaggerate or blurt out things that aren’t true.

Oftentimes, they may speak without pausing to consider the impact of their words and actions.

Time Blindness and Forgetfulness

Time blindness in ADHD can make it challenging to keep track of when tasks or events occur.

Forgetfulness and memory lapses are also common.^[2]

For example, an adult with ADHD might insist they completed a task or claim they weren’t given certain information, when they simply forgot.

Executive Function Struggles

Executive function is a set of mental skills that help you meet daily goals. ADHD symptoms can disrupt this, leading to challenges like missed deadlines or misplaced items.

People with ADHD often receive criticism for forgotten tasks and missed deadlines. Over time, this makes them more sensitive to judgment and rejection.^[3]

When confronted about a mistake, they might make excuses to avoid disappointing others or facing conflict. For example, say a family member confronts you about an undone errand. Your instinctive response might be to say, “I was just about to do it,” even if it completely slipped your mind.

Is Lying a Symptom of ADHD?

Lying isn’t an official diagnostic symptom of ADHD.

However, certain traits of ADHD, like impulsivity, can make it easier to fall into the trap of lying.

Clarifying Misconceptions

There’s a clear difference between chronic dishonesty and ADHD-related avoidance behaviors.

Chronic dishonesty involves deliberate, ongoing deception for personal gain.

ADHD-related lying is different. It usually happens when someone tries to hide mistakes or avoid criticism. It’s not about wanting to deceive people.

Intent vs. Impulse

Many ADHD-related lies aren’t planned. In the moment, the ADHDer might feel cornered, accused, or judged and blurt out something untrue before they even realize it.

Understanding why it happens is the first step; the next is learning strategies to respond differently.

ADHD and Compulsive Lying in Adults

For some adults, lying can become habitual and even subconscious over time.

Unfortunately, this can lead to adults with ADHD being seen as unreliable or dishonest. In reality, many are working hard to cope in a world that often overwhelms them.

Learned Coping Mechanisms

Compulsive lying often starts with small, seemingly harmless lies that develop as a coping mechanism.

For many adults with ADHD, lying can become a survival tactic after years of feeling misunderstood or judged. It may become automatic to avoid conflict or consequences.

Masking and Self-Preservation

Many adults with ADHD also engage in masking. It involves putting on a front to appear more organized, focused, or capable than they actually feel. This can sometimes lead to constant lying to gain approval, maintain trust, or avoid worrying others.

For example, you might lie about crucial details of your work or home life to create the illusion that everything is fine.

How ADHD Traits Can Make Honesty Harder

Certain ADHD traits make telling the truth harder, especially in tough situations.

These ADHD traits include the following:

1. Rejection sensitivity and fear of disapproval:

Many adults with ADHD report intense fear of being criticized, rejected, or letting someone down. ^[4] This rejection sensitivity can lead to lying as a way to gain approval and avoid conflict.

2. Poor working memory and follow-through:

ADHD can impact memory, making it difficult to remember tasks, deadlines, events, and instructions. This may lead to last-minute excuses or lies to manage embarrassment or avoid conflict.

3. Emotional dysregulation and avoidance:

Emotional dysregulation is common in ADHD, making it harder to manage big emotions.^[5] As a result, an ADHDer may react defensively and lie to escape situations where they feel overwhelmed, cornered, or accused.

Tips to Address ADHD and Lying

If you or someone you love struggles with ADHD-related lying, it’s essential to address it. 

With the right strategies, you can rebuild trust, communicate better, and create a healthier dynamic.

Tips to Help an ADHDer

Respond Calmly, Not Emotionally

If your loved one with ADHD is caught in a lie, it’s natural to feel hurt or frustrated. But reacting with anger or accusation might cause them to shut down or become defensive.

Before responding, take a deep breath and calm yourself. Approach the situation with curiosity. Focus on understanding why they lied, rather than just calling them out.

A calm, compassionate response helps them feel safe enough to be honest next time.

Reinforce Honesty with Positive Feedback

For someone used to criticism, being honest can feel uncomfortable or scary.

When your friend or loved one tells the truth, no matter how small, acknowledge it. Let them know you appreciate their honesty. This creates a safe space for both parties to be truthful with each other.

Model Honesty and Accountability

Honesty is a two-way street. When you make a mistake, own up to it.

When partners or family members model openness and accountability, it encourages the person with ADHD to do the same.

Tips for the ADHDer

Focus on Problem-Solving

It’s natural to feel guilty or ashamed when you lie. But what’s most important is to reflect on why you lied. 

Was it because you forgot something? Were you afraid of conflict or worried about disappointing someone? Once you identify your triggers, you can create practical solutions to prevent similar situations.

For instance, if forgetfulness often leads to lies, using a planner or digital reminders can help you stay on track. This can reduce lying when something slips through the cracks. 

Use Visual or Written Reminders

Because ADHD often affects working memory, miscommunication and accidental lies can often happen.

Tools like sticky notes, whiteboards, or digital calendars can help you stay organized and transparent. Sharing these with your partner or family also keeps everyone on the same page.

Seek Professional Support When Needed

If ADHD-related lying is starting to affect your relationships, work, or self-esteem, reaching out for professional help can make a big difference.

Cognitive Behavioral Therapy (CBT) or ADHD coaching can be useful. These may help you understand your triggers, manage impulsivity, and build healthier coping habits.

How to Rebuild Trust After Lying

It takes time to rebuild trust. But the key is to take small, consistent steps and to uphold honesty through actions, not just words. 

You can break the habit of lying and build healthier relationships. It takes commitment, but change is absolutely possible.

Acknowledge Without Over-Apologizing

When someone points out your lie, it’s natural to feel embarrassed or guilty.

A long, drawn-out apology might come off as over-explaining or make the other person uncomfortable. Instead, focus on taking responsibility and offering a solution.

For example, you could say, “I’m sorry I forgot the errand and lied about finishing it. I’ll start keeping a list next time so it doesn’t happen again.”

Your behaviors should then also reflect your promise to change.

Set Shared Systems and Checkpoints

Trust is easier to rebuild with structure and transparency.

Consider having shared calendars, to-do lists, or regular check-ins to stay on the same page. These tools facilitate better follow-through and can reduce misunderstandings.

Celebrate Improvements Together

Perfection isn’t the goal, progress is.

Take a moment to acknowledge small wins and honest efforts along the way.

Celebrating these moments together with a partner or family member can help reinforce positive change. Doing this may also strengthen the relationship and trust between both parties.

When to Seek Therapy for ADHD and Lying

Sometimes, ADHD-related lying can become a habit that affects your relationships, work, and self-image.

When It’s Time to Get Support

Consider seeking therapy or professional assistance if you notice any of these signs:

• Frequent and repetitive lying
• Struggling with a nagging guilt or anxiety of being found or called out
• Having strained relationships with loved ones, friends, or co-workers due to eroded trust
• Struggling to break the habit despite having the best intentions

How Therapy Can Help

ADHD therapy can help unpack the triggers and emotions behind lying, like fear, shame, or rejection sensitivity.

Cognitive Behavioral Therapy (CBT) helps you spot unhelpful thoughts and change them. This can help you make better choices. Research shows that it can reduce core symptoms of ADHD.^[6] This might improve memory, focus, and executive function. With this, you may be less likely to end up in situations where you’re tempted to lie.

ADHD coaching can also be helpful. Coaches work with you to build executive function skills and strengthen communication.

If you decide to seek help, it’s best to look for a therapist or coach who has worked with adult ADHDers.

Moving Forward with Honesty and Self-Compassion

Living life with ADHD isn’t easy at all, and lying might have become a mechanism to cope with your symptoms and challenges. But with patience, consistency, and self-awareness, being honest will become more natural over time.

While it is difficult, being truthful helps you feel more at peace with yourself, even when things don’t go the way you want.

If you’re ready to learn, heal, and connect with others who understand the challenges you face, you don’t have to do it alone. ADDA+ offers guidance, resources, and community support to help you live your best life with ADHD. 

Frequently Asked Questions

Is lying part of ADHD?

No, lying isn’t an official symptom of ADHD. However, traits like impulsivity, forgetfulness, and emotional dysregulation can make lying more likely.

Why do adults with ADHD lie?

Adults with ADHD may lie to avoid criticism, conflict, or feelings of shame. Sometimes, it happens in the heat of the moment, or unintentionally because they genuinely forgot an important detail.

How can I be more honest with ADHD?

Start by reflecting on why you lie, whether it’s fear, forgetfulness, or to avoid letting someone down. From there, you can create practical systems. Tools like digital calendars, reminders, and written checklists can help. Open communication with loved ones also helps build a culture of honesty at home.

Can therapy help stop ADHD-related lying?

Yes. Therapy and ADHD coaching can help you uncover the root causes of lying and develop strategies to manage impulsivity, emotional regulation, and communication. That said, these approaches will work best when you’re genuinely motivated to change yourself.

How do I rebuild trust after lying?

Focus on taking responsibility without over-apologizing. Back up your words with actions, and communicate regularly and openly. Taking these small steps consistently will help you rebuild trust and strengthen your relationships.

References

[1] Rosenthal, E. A., Broos, H. C., Timpano, K. R., & Johnson, S. L. (2024). Does Emotion-Related Impulsivity Relate to Specific ADHD Symptom Dimensions, and Do the Effects Generalize Across Comorbid Internalizing and Externalizing Syndromes?. Journal of Attention Disorders, 28(2), 178–188. https://doi.org/10.1177/10870547231210283

[2] Pawley, A. D., Mayer, J. S., Medda, J., Brandt, G. A., Agnew-Blais, J. C., Asherson, P., Rommel, A.-S., Ramos-Quiroga, J. A., Palacio Sanchez, J., Bergsma, D., Buitelaar, J. K., Ortega, F.B., Muntaner-Mas, A., Grimm, O., Reif, A., Freitag, C. M., & Kuntsi, J. (2024). Verbal memory performance in adolescents and adults with ADHD. Neuroscience Applied, 3, 103941. https://doi.org/10.1016/j.nsa.2024.103941

[3] Beaton, D. M., Sirois, F., & Milne, E. (2022). Experiences of criticism in adults with ADHD: A qualitative study. PloS one, 17(2), e0263366. https://doi.org/10.1371/journal.pone.0263366

[4] Müller, V., Mellor, D., & Pikó, B. F. (2024). Associations Between ADHD Symptoms and Rejection Sensitivity in College Students: Exploring a Path Model With Indicators of Mental Well-Being. Learning Disabilities Research and Practice, 39(4). https://doi.org/10.1177/09388982241271511

[5] Soler-Gutiérrez, A. M., Pérez-González, J. C., & Mayas, J. (2023). Evidence of emotion dysregulation as a core symptom of adult ADHD: A systematic review. PloS one, 18(1), e0280131. https://doi.org/10.1371/journal.pone.0280131

[6] Liu, Chun-I., Hua, M.-H., Lu, M.-L., & Goh, K. K. (2023). Effectiveness of cognitive behavioural-based interventions for adults with attention-deficit/hyperactivity disorder extends beyond core symptoms: A meta-analysis of randomized controlled trials. Psychology and Psychotherapy, 96(3). https://doi.org/10.1111/papt.12455