Clumsy Is Not a Diagnosis

People have a word for the kid who trips on flat ground, drops the cup, and walks into every doorframe. The word is clumsy.

A look at more than 117 million U.S. medical charts says something quieter. Some of those bodies may have loose joints with a real name. This is not a stretch video, a miracle, or a reason to diagnose yourself from a blog. The numbers are for people 15 and older.

A huge study. Still a small number.

Researchers at Epic looked at outpatient visits from January 2017 to April 2026. They compared people with autism, ADHD, or both with people who had neither, matched by age, sex, and how often they used care. Two teams ran the same question so one group could not talk the other into a result.

Connective-tissue diagnoses showed up more often in every neurodivergent group. The biggest jump was in people with both autism and ADHD. They were much more likely to have a heritable connective-tissue condition such as Ehlers-Danlos or Marfan, and much more likely to have a hypermobility spectrum disorder.

Here is the part that keeps the story honest. “More likely” is not “most people.” In the autism-plus-ADHD group, about 21 in 1,000 had one of those structural diagnoses. In the comparison group, it was about 4 in 1,000. Autism without ADHD was about 12 in 1,000 versus 3 in 1,000.

So yes, the odds are higher. No, this is not half of us.

The study is reading what doctors already wrote in charts. It does not prove that autism causes loose joints, or the reverse. People who see doctors more often pick up more labels. The teams even checked kidney stones, a condition that should not travel with autism. That check was only partly clean. Worth saying out loud.

Pain is not a behavior

A smaller 2022 clinic study had already pointed at the same tissue. Among 109 adults with autism, ADHD, or a tic disorder, about half met a hypermobility cutoff. In the comparison group of 57 adults, it was closer to one in six. The neurodivergent adults also had more pain, and more dizziness or faintness when they stood up. The loose joints helped explain both.

That is 109 people, not 117 million. It is the human sentence the giant chart study cannot say. The ache and the light head get treated as anxiety, a sensory “preference, or not trying.

Swedish records from 2016 ran the story the other way. Among 1,771 people who already had Ehlers-Danlos, autism showed up about seven times as often as in matched comparisons. ADHD about six times. That does not mean every autistic person has Ehlers-Danlos. It means clinics have been seeing this overlap from both sides for years.

A 2026 UK survey asked 1,754 adults who already had hypermobile Ehlers-Danlos or a hypermobility spectrum disorder. About a quarter were autistic. The average wait from first symptoms to a name was almost 19 years. It is a self-selected survey, not a population rate. It is still the lived line: the body is already in the room, and it can take a generation to get a name.

What this does not mean

It does not give you a score you can do in a parking lot. It does not replace a clinician. It does not say most autistic people will get a connective-tissue diagnosis. Twenty-one in a thousand is not half.

It also does not turn pain into a sensory diet. The old trick is this: if the person is autistic, the limp, the bruise, the faint, the shoulder that slips is “the autism.” The charts say look at the tissue.

A good history names the joints, the fainting, and the family pattern so the person is not treated as noncompliant. It does not promise a cure. It does not sell a gadget. It gets the pain out of the behavior plan.

What to ask a clinician

This is a conversation starter. It is not an exam.

Bring a short written list:

• Joints that slip, pop, or feel unstable after ordinary days, not only after sport

• Pain that hangs around, or shows up the next morning as if you had done much more

• Dizziness or a racing heart when you stand

• Easy bruising, stretchy skin, or a parent or sibling with the same joints

• When it started, what makes it worse, and what already got blamed on autism

Ask if hypermobility spectrum disorder or Ehlers-Danlos should be on the list of things they are checking. Ask if they have looked at dizziness or a racing heart when you stand. Then let them do the exam.

This post is not a grade for your clinician. It is not a treatment plan from a comment section.

The body can be autistic and still have collagen. Clumsy is not a diagnosis.

Sources

Kersten Bartelt, Grant Keane, Blaine Franklin, and Emily Higgs published “Neurodivergence Linked to Higher Rates of Connective Tissue Disorders” on Epic Research, August 20, 2026. Cosmos analysis of more than 117 million U.S. adults and adolescents aged 15 and older with an outpatient visit between January 2017 and April 2026. Dual-team study. https://epicresearch.org/articles/neurodivergence-linked-to-higher-rates-of-connective-tissue-disorders

Jessica L. L. Csecs, Valeria Iodice, Charlotte L. Rae, and colleagues, including Jessica A. Eccles, published “Joint Hypermobility Links Neurodivergence to Dysautonomia and Pain” in Frontiers in Psychiatry on February 2, 2022. Sample: 109 neurodivergent adults and 57 comparison adults. https://doi.org/10.3389/fpsyt.2021.786916

Martin Cederlöf, Henrik Larsson, Paul Lichtenstein, Catarina Almqvist, Eva Serlachius, and Jonas F. Ludvigsson published “Nationwide population-based cohort study of psychiatric disorders in individuals with Ehlers–Danlos syndrome or hypermobility syndrome and their siblings” in BMC Psychiatry in 2016. EDS n=1,771. Autism RR 7.4 (95% CI 5.2–10.7). https://doi.org/10.1186/s12888-016-0922-6

Catherine J. Crompton, Themis N. Efthimiou, Dervil M. Dockrell, and Kathryn M. Berg published “Health experiences and outcomes of autistic and non-autistic adults with hypermobile Ehlers-Danlos syndrome and hypermobility spectrum disorder” in BMC Medicine on February 25, 2026. Online survey of 1,754 UK adults with hEDS or HSD; about 25 percent autistic. Self-selected, not a prevalence study. https://doi.org/10.1186/s12916-026-04713-2