Checking OCD

What is checking OCD?

Checking OCD refers to an OCD pattern in which obsessions prompt visible or mental compulsions. The checking is intended to determine whether something is safe, correct or genuine. A visible check may involve testing a door handle, reviewing an email or seeing whether an appliance is switched off. Internal checking may focus on whether a feeling is right, a bodily reaction means something particular, a thought was intentional or an event is remembered correctly.

Checking may centre on one area or span several themes, such as Harm OCD, Hit-and-Run OCD and Just-Right OCD. For the same person, the focus of the checking may change while the need to remove doubt remains.

When does an ordinary check become an OCD pattern?

A practical check has a concrete reason and a natural endpoint. Administering medication, accounting or working with hazardous equipment may require double-checking and documentation according to a fixed procedure. Once the agreed steps have been completed, the person moves on.

In checking OCD, the check becomes difficult to end. The first check may provide a moment’s relief, but a new doubt soon arises: Did I look properly? Could I have touched the switch again? Am I remembering today or yesterday? What if I overlooked the exact error that has serious consequences? The checking takes on a new purpose: removing uncertainty, guilt and responsibility.

The checking often has these characteristics:

• It is repeated even though no new information has emerged.
• It must be performed in a particular way or accompanied by a particular feeling of certainty.
• Relief lasts only briefly, after which doubt returns or moves to a new detail.

Even a small number of visible checks can take a great deal of time. One slow check involving intense concentration, photography and subsequent mental review may occupy more time than several quick checks. Avoidance can also conceal the pattern. A person may stop using the oven, sending applications or leaving home alone to avoid the checking that would otherwise follow.

What does someone with checking OCD fear?

Fear may concern fire, burglary, an error at work or an accident. A common feature is a strong demand to prevent harm and be completely certain that one has acted responsibly. If something goes wrong, the person fears the consequences and guilt, as well as the thought that the event could have been prevented by being more careful.

This sense of responsibility may be far broader than the situation actually requires. Even a very small possibility may carry the same weight as a likely event because the person experiences the responsibility as their own. It may feel unforgivable to move on while even the slightest doubt remains. It therefore becomes tempting to check again, transfer the checking to someone else or create memory evidence that can be used when doubt returns.

Typical obsessions may include:

• What if the door is not locked and someone breaks in?
• What if I entered the wrong figure and caused harm to a client or colleague?
• What if I forgot to switch something off and a fire starts?
• What if I accidentally changed the setting while checking it?
• What if my memory is wrong and I only discover it when it is too late?
• What if I could have prevented it but chose to move on?

The thoughts do not have to take the form of clear sentences. Some people instead experience physical unease, an internal warning signal or a sense that the check is not complete. Others see a brief image of the feared event and interpret it as a reason to investigate the situation again.

Checks may focus on both the external world and internal experience

Physical checking is easy to see: trying the door, looking at the switch or returning to the car. Other checks take place through the senses, memory, body or conversations with other people.

Repeated physical checking. The person tests, inspects, counts or measures several times. Each check may be identical to the last, or a fixed sequence may develop to ensure that nothing is overlooked.

Monitoring the senses. Attention is directed towards the sound of the lock, pressure in the hand, position of a button or feeling of having done something correctly. If the sensory impression does not feel clear enough, the action is repeated. The check must both be performed and imprinted as memory evidence.

Photographs, videos and digital traces. A picture of the cooker, a video of the locked door or a screenshot of a form may function as a safety behaviour. The material is kept as evidence against later doubt, but may itself become the subject of checking: Is the picture from today? Does it show everything? Could something have changed afterwards?

Mental reconstruction. The person reviews the sequence in their mind: Where was I standing? Which hand did I use? What happened immediately afterwards? The mental film is replayed repeatedly in an attempt to find the detail that will settle the doubt. Mental checking may be almost invisible to others even when it occupies much of the day.

Checking feelings and bodily sensations. Attention may focus on whether love, attraction, grief, guilt or pleasure feels strong enough and in the right way. The person may also examine heart rate, tension, warmth, arousal, nausea or other bodily signals to determine what they mean. Intense monitoring may make the spontaneous experience harder to sense. An unclear response then prompts another check.

Checking thoughts and images. Some review whether a thought really occurred, whether it was intentional or whether it says something particular about them. Others evoke a mental image repeatedly to examine its details or their own reaction. Consciousness itself becomes the subject of checking.

Reassurance and transferring responsibility. Through reassurance seeking, the person asks whether others saw the same thing or asks them to take over the check. It may also be important that someone else is the last to touch the door, send the document or leave the room. The other person temporarily carries the responsibility.

Checking through avoidance. Some limit their use of electrical appliances, avoid tasks involving responsibility or choose only situations in which they can return and check. There may therefore be few visible rituals while daily life is nonetheless organised around avoiding future doubt.

Why can more checking create less trust?

Repeated checking may weaken trust in memory even when actual memory performance is affected only slightly. After many nearly identical checks, the individual episode becomes less distinct. The person may remember checking the door many times but cannot hold on to the most recent check as a convincing memory.

In experimental studies, repeated checking has been associated with lower perceived clarity, fewer details and less confidence in memory. A meta-analysis found a much stronger effect on memory confidence than on accuracy. The findings therefore point to uncertain memory rather than generally poor memory.

The same may happen with mental checks. When an action is repeatedly reconstructed in the mind, the mental version may gradually compete with the experience itself. It becomes more difficult to distinguish between what the person registered in the situation and the many subsequent reviews. The attempt to create stronger evidence may therefore make the evidence less convincing.

Three ways checking OCD may appear

When checking spreads through daily life

It may take a long time to leave home, complete a task, go to bed or hand responsibility to someone else. Delays easily create conflict, and relatives may gradually be involved as witnesses, checkers or recipients of repeated questions. At the same time, the person may feel ashamed of needing help with something that looks simple from the outside.

The checking may change form. After checking the situation itself, doubt may focus on the time, the photograph or the possibility that something changed afterwards. In addition to visible actions, time is spent on mental review, gathering evidence, avoidance and transferring responsibility.