Tolerating uncertainty: acting without knowing the full outcome

What is not yet known

Somebody waits for a test result, submits an application or begins a relationship. They may know the timescale and options, but not the outcome. The mind attempts to fill that gap through predictions, searches and questions.

Intolerance of uncertainty describes a negative reaction to not knowing. It is related to worry and occurs across several disorders, but is not a diagnosis by itself.

Useful control and impossible control

Some facts can be obtained: a date, medical instruction or contract terms. Other results will only become known later. Combining these groups prolongs searching and makes a reasonable action appear insufficient.

Checking produces relief when it confirms that nothing has changed. That relief may teach the person that waiting was dangerous and checking was necessary. The next interval then becomes harder to tolerate.

Common behaviours

• Continually checking for new messages or results.
• Asking several people for predictions.
• Avoiding commitments until every variable is known.
• Preparing many plans for unlikely situations.
• Treating doubt as evidence that another check is missing.

Learning without complete certainty

Therapy distinguishes which information is missing, when it will be available and which action is appropriate in the meantime. Checks and safety behaviours may also be reduced gradually. Learning does not require anxiety to disappear during practice.

A specific step may involve spacing one check, maintaining a reversible decision or waiting until an agreed time before reviewing. Difficulty is graded according to genuine risk; dangerous situations are not used and medical instructions are not ignored.

Advice is warranted when the need to know blocks decisions, takes hours, disrupts sleep or markedly restricts activities. Assessment can determine whether generalised anxiety, health anxiety, OCD or another problem predominates.