The Y-BOCS checklist is a screener and a conversation starter, never a diagnosis. Its numerical score is how we track OCD treatment across visits, especially as SSRI doses go up.
How we use it
Do not use it as a diagnostic. Patients without OCD have marked every item and patients with OCD have marked only one or two. What the screener gives you is an anchor to start asking about obsessions and compulsions in a narrative way.
“you can have a totally positive Yale Brown, and it's not OCD, and you can have a one or two positive Yale Brown, and it is OCD. But by doing the screener, it at least gives you an anchor to start inquiring in a narrative fashion”
35:22ADHD Is Not the Only Diagnosis: Differential and Diagnostic HierarchyNov 2025 Also said in 1 more episode
“do not use the Y box as a diagnostic. I've had patients without OCD who marked every single one. And I've had patients with OCD who've only marked one or two”
32:43What Is OCD? How to Understand It, Recognize It, and Treat ItJul 2025 It beats asking DSM-style questions directly. People with OCD often do not recognize their behaviors as obsessions or compulsions, and people with repetitive worries will say yes.
“I find that directly questioning about OCD is relatively low yield. It's not sensitive or specific if you just ask SCID type questions with the DSM criteria. People with OCD will not recognize their behaviors as obsessions or compulsions. People without OCD with worries, repetitive worries, will answer it in affirmative”
30:48What Is OCD? How to Understand It, Recognize It, and Treat ItJul 2025
Monitoring
In OCD, get a Y-BOCS score, track it across visits and see whether it changes as doses go up, remembering that OCD can take longer to respond to an SSRI.
“for OCD, please get a Weibach score of some kind, track it across visits, see if it's changing over time with increased doses, even though it takes a longer time, maybe for anxiety and OCD to respond to SSRI medication”
9:48Practical OCD Psychopharmacology: Evidence‑Based (& Non Evidence-Based) Medication ApproachAug 2025 When you use it for follow-up, tell patients they do not need to fill out the symptom checklist every time, just the numerical part. Obsessional patients follow rules and will otherwise redo the whole thing.
“if you are going to be using it for your longitudinal treatment monitoring, obsessional people being such role followers, make sure to tell them you don't need to fill out the symptom checklist every time. Okay, just the numerical one we're monitoring”
34:17What Is OCD? How to Understand It, Recognize It, and Treat ItJul 2025
From these episodes
Every point above is something said on the Psychofarm podcast, with the words as spoken and a link to the moment in the episode. It is education, not medical advice, and an episode reflects what we thought when we recorded it.