Internally, many undiagnosed adults with autism say they feel different from those around them.

You may have seenvideoson social media where people detail the signs that made them realize theyre autistic.

Viewers are finding them enlightening and comforting as many people mainly women are undiagnosed as they reach adulthood.

Person with back turned, wearing a long-sleeved shirt, looking at a scenic lake with hills in the background

And those internal symptoms are very different from person to person.

There are so many ways that autism can show up and present, Neff added.

I think theres more diversity within autism than there is between autism and allistic.

A person with cropped hair and hoop earrings stands facing a body of water with rock formations in the distance

(Allistic people are folks who arent on the autism spectrum.)

The feeling could be overpowering or could be more subtle, it depends on the person, she said.

They may find options that are more inclusive for neurodivergent people.

Two women, Valentina and Sabrina, stand and chat in a backyard garden setting during sunset. There are seated people visible in the background

Difficulty With Social Cues

Social cues are also another sign.

Additionally, romantic relationships may feel tough to navigate.

People who are not autistic tend to be more or less responsive to sensory stimuli, she said.

A couple stands on a dock overlooking a calm lake. The woman wears a patterned robe, and the man wears a white shirt and jeans, hugging her with an arm around her shoulders

A Desire For Routine

Many people with autism thrive on consistency.

The world we occupy is much more uncertain and unpredictable.

So we go to routine as a way of self-soothing, Neff said.

Person with ponytail and headphones wearing an athletic jacket stands with hands on hips, looking down a park path lined with trees

When a routine is disrupted, strong emotions may present, including intense irritability or anxiety.

Instead, it could be a strong preference for a certain mug every morning.

Routine looks different for different people.

A woman stands on a subway platform, holding her phone and watching a train as it passes by. She has her hair tied up and carries a large handbag

Additionally, big changes can be hard, too.

Routine can extend to certain behaviors as well.

A Need For Solitude

Another common sign?

Person sitting on a bench facing the ocean, wearing a long, textured coat, black leggings, and red shoes. Their back is to the camera

This could mean feeling totally exhausted after a work presentation or a family party.

Bal said this exhaustion comes from a term known as camouflaging or masking.

Tessers added that, from the outside, people have no idea when someone is camouflaging.

A person wearing a beanie and plaid shirt stands inside a wooden cabin, looking out an open window with sunlight streaming in

Theyre doing what everybody wants or expects of them to some successful degree.

More Intense Interests

A deep curiosity and passion for one particular activity or subject can also develop.

This could mean building a career around a specific interest or knowing everything about a specific hobby.

A woman with long hair and glasses, wearing a plaid dress, sits and talks to a man with curly hair in a casual office setting.

They typically dont enjoy small talk and perhaps found ways to avoid it, Neff said.

Gardner-Wright added that people who are on the spectrum tend to prefer deep, meaningful conversations.

Neff said autistic people tend to be pretty literal.

A woman smiling and sitting at a desk, wearing a blue blouse, with hands slightly raised. Office supplies are seen in the background

Additionally, the communication style can be described as direct and honest.

What we say, we tend to say at face value, Neff added.

If you think you have these signs, look to autistic voices for guidance.

Discovering that youre autistic as an adult can be really validating, Gardner-Wright said.

It can help you more fully understand yourself and your life.

Feeling a mix of grief and also excitement is very, very normal, Gardner-Wright said.

it’s possible for you to reach out to mental health professionals, too.

I worry theres a lot of misinformation and misconceptions out there.