When 'just once more' never quite settles it
Checking OCD
Also known as Responsibility OCD · Doubt-driven checking · Lock-and-stove OCD
Checking OCD is driven by an inflated sense of responsibility for preventing harm, paired with persistent doubt about whether you've done enough. Locks, appliances, emails, and driving routes are checked again and again. Each check is meant to bring certainty, yet often leaves memory feeling foggier and the doubt even louder.
The question OCD keeps asking“What if I didn't really lock it, and something terrible happens because of me?”
No answer ever satisfies it for long. That is the clue.
What shows up uninvited
Common obsessions
- Doubt about whether doors, windows, or the car are truly locked
- Fear that a stove, iron, or appliance was left on and will start a fire
- Worry about having made a serious mistake in an email, form, or work task
- Fear of having hit someone while driving without noticing
- Concern that a tap left running will flood the home
- Doubt about whether you said or did something that caused offense or harm
What people do
Visible compulsions
- Returning repeatedly to check locks, switches, and taps
- Touching or pulling handles a specific number of times
- Taking photos or videos as proof that something is off or locked
- Rereading emails and documents many times before and after sending
- Driving back along a route to look for signs of an accident
- Asking others to confirm that something was done properly
What happens silently
Mental compulsions
- Replaying the memory of locking up to try to feel sure
- Counting or saying a phrase while checking to fix it in memory
- Calculating the likelihood of disaster to decide whether to go back
- Reviewing the day for errors before falling asleep
What gets quietly skipped
Avoidance
- Being the last person to leave the house
- Cooking or using appliances when alone
- Taking on responsible roles at work
- Driving, especially at night or in busy areas
Why this is OCD
Double-checking something important now and then is ordinary. In Checking OCD, the checking is fueled by a sense of excessive responsibility and a need to feel certain, rather than by any real gap in memory. Studies on checking have found that repeated checking actually lowers confidence in memory, so the more you check, the less sure you feel. This differs from ordinary forgetfulness, where one look settles the matter. It also differs from generalized anxiety: the worry is tied to specific, often vivid feared outcomes and is relieved, briefly, by a ritual. Recognizing the loop helps you step out of it.
Hiroshi was often twenty minutes late for work because leaving the apartment took so long. He checked each burner on the stove, pressed his palm to the iron, and pulled the door handle until his wrist ached. Even on the train, he'd picture smoke billowing from his building. His therapist helped him see that checking was making his doubts worse, not better. They began with checking only once and saying 'maybe it's on'. Within weeks, he left the house in two minutes, sometimes still uncertain, but no longer ruled by it.
What treatment might include
A sample exposure ladder
Steps are always planned together and taken at your pace. These are examples, not a prescription.
- 1Locking the front door once, saying out loud 'it might be unlocked', and walking away
- 2Turning off the stove once and leaving the kitchen without looking back
- 3Sending a routine email after reading it a single time
- 4Leaving home for an hour after checking only once, allowing doubt to remain
- 5Deleting the 'proof' photos on your phone and choosing not to take new ones
↑ harder steps sit higher
Sketch your own ladder