Field Guide · Pillar · Autism & Co-occurring Illness

The root-cause approach to autism.
Treatable drivers behind regression & behavior.

If your autistic child is suffering — in pain, raging, regressing, not sleeping — this is the map. Some autistic children carry co-occurring, treatable medical conditions that cause that suffering and sometimes that regression. Finding and treating those is not treating autism, and it is not a cure for anything. It is the search for treatable illness that no single specialist is set up to run.

I walked this part of the labyrinth myself — knocked on the doors, read the research, and came back with the map. You don’t have to find the way out alone.

Read this before anything else

There is no cure for autism, and nothing on this page tries to provide one. Autism is part of who your child is. A child does not need to be “recovered,” “fixed,” or made into someone else — and we reject that framing entirely. A neurodiversity-respecting stance is the only honest one.

What is true and worth your time: some autistic children also have separate, treatable medical conditions — PANS, infections, mold, gut imbalance, methylation problems — that cause real, removable suffering. Treating that illness can improve comfort, health, and sometimes behavior or regression. The goal is to relieve medical suffering, full stop.

Why these conditions get missed

The treatable drivers to investigate

Each of these is a separate, co-occurring medical condition — none of them is autism. Often more than one is in play at once. Tap any one to dig in.

How to think about the whole picture

The reason this is hard — and the reason it’s worth doing carefully — is that these drivers rarely travel alone. A child can have a strep-triggered flare riding on a leaky gut, fed by a methylation bottleneck, in a moldy house. Treating one and ignoring the rest leaves the child still suffering.

The method is unglamorous and it works: start from the timeline and the symptom pattern, test for each suspected driver, and read the results together — not as eight separate opinions. That cross-modality integration is precisely the thing no single specialist is trained to do, and precisely what Plan B was built to help with.

A word of caution for a desperate moment: autism is the most quackery-heavy space in medicine, full of people selling certainty and “recovery.” Be skeptical of anyone promising to cure or reverse autism, anyone selling the test and the supplements, and any protocol that skips testing. Lead with evidence, test before you treat, and treat the child — not the printout.

Free Synthesis

This is a lot to hold — and you don’t have to hold it alone. Plan B reads your child’s history, symptoms, and any labs together and turns it into a clear plan: which drivers fit the timeline, what to test, and what to ask your doctor — the integration no single specialist sits down to do. Your first Synthesis is free.

Start your free Synthesis → Parent education, not medical advice. You stay in charge.

Where to go from here

Treatments families ask about

Bottom line

The root-cause approach to autism is simple to state and easy to get wrong: find and treat the co-occurring, treatable medical conditions — PANS, strep, mold, Lyme, gut, yeast, methylation, MCAS — that cause real suffering and sometimes regression. It is not treating autism, not a cure, and not an attempt to change who your child is. It is the search for treatable illness, run with skepticism, evidence, and respect for the child in front of you. Parent education, not medical advice — bring it to your team as questions.

How Plan B stays honest

Plan B does not partner with drug companies or doctors, and we never endorse anyone whose healing isn’t verified by families. We show you the options and how to vet them yourself — and we’re building parent verification: look up a practitioner and see real family reviews before you trust them. Universal bad reviews? Skip.

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