Alexithymia affects roughly 10% of the general population, making it more common than many people expect for a condition most have never heard of. Estimates across studies range from about 6% to 13%, depending on the population sampled and how the measurement is done. Those numbers climb dramatically in people with certain mental health conditions or neurodevelopmental differences.
Prevalence in the General Population
The most widely cited figure is around 10%, drawn from large community samples using the Toronto Alexithymia Scale (TAS-20), the standard screening tool. A 2025 systematic review placed the range slightly lower, between 6% and 13%. Some studies of university students have found rates as high as 18%, which may reflect the age of the sample or the stress of that life stage rather than a true population difference.
Men are more likely to meet the threshold than women. In one large study, 11.9% of men scored in the alexithymic range compared to 8.1% of women. That gap is consistent but modest, and researchers still debate how much of it reflects genuine differences in emotional processing versus differences in how men and women report their inner experiences on questionnaires.
How Alexithymia Is Measured
Nearly all prevalence research uses the TAS-20, a 20-item self-report questionnaire. It measures three things: difficulty identifying your own feelings, difficulty describing those feelings to others, and a tendency to focus on external events rather than internal emotional life. A total score of 61 or higher is classified as alexithymia, scores between 51 and 60 fall in a borderline range, and 50 or below is considered non-alexithymic.
Because it’s a self-report tool, there’s an inherent tension: people who struggle to recognize their emotions are being asked to report on that struggle. This is one reason prevalence estimates vary across studies. Still, the TAS-20 has been validated extensively across languages and cultures, and it remains the benchmark.
Rates in Autism and ADHD
Alexithymia is far more common in neurodivergent populations. A meta-analysis of studies involving autistic individuals found a weighted mean prevalence of about 50%, with individual studies ranging from 33% to 63%. For comparison, the non-autistic control groups in those same studies had a prevalence of just under 5%. This tenfold difference has led researchers to explore whether many of the emotional difficulties historically attributed to autism are actually better explained by co-occurring alexithymia.
ADHD shows a similar pattern. In one study of 101 adults with ADHD, 41.5% met the criteria for alexithymia, compared to much lower rates in age-matched controls. The connection likely involves the way ADHD affects attention to internal states. When your brain is wired to chase external stimulation, the quieter signals of emotion can get lost in the noise.
Rates in Depression, PTSD, and Eating Disorders
Mental health conditions push the numbers even higher. About 50% of people with depressive disorders score in the alexithymic range on the TAS-20. That’s five times the general population rate, and it raises a complicated question: does alexithymia make depression harder to treat, or does depression itself temporarily blunt emotional awareness? Evidence points in both directions, though alexithymia often persists even after depressive symptoms improve, suggesting it’s not purely a byproduct of low mood.
The overlap with PTSD is strikingly similar. A 2025 meta-analysis of 36 studies found that 53% of people with PTSD met the threshold for alexithymia. PTSD severity correlated directly with alexithymia scores, and the two conditions together were linked to higher rates of dissociation. This combination can make traditional talk therapy less effective, since the core therapeutic task of putting feelings into words is exactly what alexithymia makes difficult.
Eating disorders also show a strong association. People with anorexia nervosa and bulimia nervosa score significantly higher on alexithymia measures than healthy controls, with large effect sizes in both cases. The difficulty identifying feelings subscale shows the biggest gap, particularly in bulimia. Some researchers think the inability to distinguish emotional hunger from physical hunger plays a direct role in disordered eating patterns.
What’s Happening in the Brain
Neuroimaging studies reveal a consistent pattern. People with alexithymia show reduced activity in brain regions responsible for emotional awareness, particularly the anterior insula (which tracks internal body states) and parts of the prefrontal cortex (which help interpret and label feelings). At the same time, they often show increased physiological arousal during emotional situations. Their bodies react, sometimes even more intensely than average, but the signal doesn’t translate into conscious emotional experience.
This disconnect helps explain a common alexithymia experience: feeling physical symptoms like a racing heart, tight chest, or stomach pain without understanding the emotional context behind them. The neural machinery fires on the physical and reflexive level but stays quiet in the areas responsible for turning those signals into something you can name and describe. It’s not that emotions are absent. They’re happening below the threshold of awareness.
Why Prevalence Numbers Matter
At 10% of the general population, alexithymia is roughly as common as left-handedness. Yet it remains largely unknown outside of psychology research. That gap between how common it is and how rarely it’s discussed has real consequences. People with alexithymia often spend years confused by their own inner life, wondering why they can’t answer the question “How do you feel?” the way others seem to. They may be misdiagnosed with depression alone, or told they’re emotionally avoidant, when the underlying issue is a genuine difficulty with emotional processing.
The sharply elevated rates in autism, ADHD, PTSD, depression, and eating disorders also suggest that screening for alexithymia in those populations could improve treatment planning. Someone who can’t easily identify or describe emotions will struggle with therapies that assume those skills are in place. Recognizing alexithymia early opens the door to approaches that work from the body up, building emotional vocabulary gradually rather than expecting it to already be there.