BPD
BPD Test

Founder and editor · United States

About Tyr, Founder and Editor of BPD Test

Hi, I'm Tyr. I built BPD Test, and I write and look after everything on it.

Someone in my family lives with the kind of difficulties this site describes. That is where this started for me. It is the reason the subject is not abstract to me, and the reason I wanted to make something careful.

I work as a counselor and have three years of experience. What I want from this site is simple. I want to help people understand themselves.

If your feelings have always seemed bigger than other people's, if the thought of being left frightens you more than you can explain, if you look at your own life and cannot say who you are, you deserve words for that. You deserve them without being judged, without being sold anything, and without being asked to hand over your email first.

That is all this site is trying to do. It cannot tell you what you have. It can help you see your own experiences a little more clearly, show you that other people have felt them too, and make it easier to say them out loud to someone who can help.

If you are reading this late at night, wondering what is wrong with you: wanting to understand yourself is not a weakness. It is usually where things begin to change.

If this site helps one person feel less alone with what they are carrying, it has been worth building.

Tyr

What I do, and what I don't

  • I write and update the pages, tests and reports, and I check each claim against its source.
  • I read every correction that is sent in and fix what is wrong.
  • I do not diagnose, treat or give personal medical advice, and nothing on this site should be read that way.
  • I do not see your answers. They stay in your browser.

Editorial policy

  • Sources first. Health information comes from public-health bodies and clinical guidelines, mainly NIMH and NICE, and from the published study behind the screening questions. Sources are linked on the page.
  • No unsourced numbers. If I cannot point to where a statistic comes from, it does not go on the site.
  • Honest labels. Informal terms such as quiet BPD or favorite person are described as informal. Questions I wrote myself are labelled as written for this site.
  • No diagnosis by quiz. No result is presented as a diagnosis, a count of diagnostic criteria, a probability or a severity rating.
  • Kind language. Pages are written for someone who may be reading on a very hard day.
  • Dates and review. Pages show when they were last updated and are re-read at least once a year.

The details of how the tests are scored are on the methodology page.

Sources and corrections

I write the content from primary sources such as NIMH and NICE, which are linked on each page. It is educational and does not replace an assessment by a professional. If you find a mistake, write to me and I will correct it.

How the site is funded

BPD Test is free. It is paid for by advertising shown through Google AdSense. Advertisers do not see your answers and have no say over the content, the questions or your result. I do not sell reports, and no test result is held back behind a payment or an email form.

Changes and corrections

November 12, 2026

  • Added the in-depth symptoms test, nine symptom-area guides, topic guides and a methodology page.
  • Added short checks in other languages.
  • Made the personal questions after the 10-question test optional, so a result is available straight away.
  • Changed page titles so they describe the tests in the words people use to look for them.

October 3, 2026

  • Replaced the original 20-prompt checklist with the published MSI-BPD screening questions and a personal report.
  • Rewrote educational pages against NIMH and NICE sources and removed statistics that had no source.

Get in touch

If something on the site is wrong, unclear or unkind, I want to know. Write to [email protected]. Please do not send test answers or details about your health, and if you may hurt yourself or cannot stay safe, find crisis support now instead of waiting for a reply.