Why do we faint with a fear of needles?

In some people with a fear of needles and blood, a reflex called the vasovagal response kicks in. Heart rate and blood pressure rise briefly at first and then drop suddenly; because blood flow to the brain temporarily decreases, dizziness or fainting can occur.

How is the applied tension technique done?

The large muscles of the arms, legs and torso are tensed at the same time for 10–15 seconds, until a slight warmth is felt in the face. Then the muscles are released to their normal level for 20–30 seconds without fully relaxing, and this cycle is repeated about 5 times.

Is it right to do breathing exercises with a fear of blood and needles?

In people prone to fainting, deep relaxation and some breathing exercises can lower a blood pressure that is already dropping even further. So if there's a history of fainting, techniques that support blood pressure, such as applied tension, are usually more suitable. If you're unsure, ask a professional.

Can everyone do applied tension?

It is considered a safe technique for most people, but those with a heart condition, high blood pressure or a history of fainting with an unclear cause should consult their doctor before using it. If a headache occurs during the technique, the intensity of the tension should be reduced.

What can I do to avoid fainting when giving blood?

Tell the healthcare worker about your fear and history of fainting in advance, give blood lying down if possible and drink enough fluids beforehand. During the procedure, use applied tension with the muscles that don't have the needle, and don't stand up without resting for a few minutes afterwards.

Fear of Blood and Needles: The Applied Tension Technique Against Fainting

If even the thought of a blood test, a vaccine or a dental injection makes you dizzy, and you have fainted before, what you experience may not be just "fear" but a specific reaction of your body. In this article we explain why a fear of blood and needles is different from other phobias and walk you step by step through the applied tension technique developed specifically for this difference.

What is a fear of blood and needles?

Blood-injection-injury phobia is an intense fear and avoidance that appears when seeing blood, getting an injection, donating blood or facing situations related to injury. It is considered a separate subtype of specific phobia, because the body often reacts to these situations in a different way.

This fear is nothing to belittle. It can directly affect health by leading people to postpone vaccines, blood tests, dental treatment and even pregnancy check-ups.

Why does fainting happen with a fear of blood and needles?

Fainting with a fear of blood and needles is related to a reflex called the vasovagal response. In a vasovagal response, the heart rate and blood pressure drop suddenly after a brief rise, so blood flow to the brain temporarily decreases.

In other phobias the body usually goes into "fight or flight" mode: the heart speeds up, blood pressure rises and fainting isn't typically expected. With a fear of blood and needles, however, the process can happen in two phases:

Phase	Other phobias	Fear of blood and needles
First reaction	Heart speeds up, blood pressure rises	Heart speeds up, blood pressure rises
Next reaction	High arousal continues, then slowly decreases	Heart rate and blood pressure may drop suddenly
Possible outcome	Anxiety, racing heart, urge to escape	Paleness, sweating, nausea, dizziness, fainting

That's why, with a fear of blood and needles, breathing exercises or deep relaxation aren't always the best first choice; they can lower a blood pressure that is already dropping even further. This is where applied tension comes in.

What is the applied tension technique?

Applied tension is a CBT technique developed by Swedish psychologist Lars-Göran Öst that aims to support blood pressure and prevent fainting by deliberately tensing the large muscles. Tensing the muscles supports blood circulation toward the brain and can ease the feeling that comes before fainting.

Important: If you've had fainting episodes with an unclear cause, or if you have a heart condition, high blood pressure or another health problem, be sure to consult your doctor before using this technique.

How do you do applied tension step by step?

The technique consists of tensing the large muscles for 10–15 seconds and relaxing them for 20–30 seconds, repeated about 5 times.

Get comfortable: At first, sit on a chair.
Tense the large muscles: Tense your arms, legs and torso at the same time. For example, clench your fists, press your arms against your body, press your legs together and toward the floor, and tighten your abdominal muscles.
Hold for 10–15 seconds: Keep the tension until you feel a slight warmth or flush in your face. Don't hold your breath; keep breathing normally.
Release, but don't fully relax: Let your muscles return to their normal level for 20–30 seconds. The goal isn't deep relaxation, just releasing the tension.
Repeat about 5 times: Repeat the tense-and-release cycle several times.
Practice regularly: Make it a habit by practicing the technique a few times a day for a week.
Learn to recognize the signs: As soon as you notice pre-fainting signs such as paleness, hot flushes, nausea or ringing in the ears, apply the tension.

If you get a headache during the technique, reduce the intensity of the tension or limit the muscle groups you tense.

How can I combine applied tension with exposure?

Once you've learned the technique, you can use it during gradual exposure. Your anxiety ladder might progress like this: looking at photos of needles, watching videos of blood tests, sitting in the waiting room of a clinic, doing a finger-prick glucose test and finally donating blood. At each step, use applied tension when you notice signs of fainting. For details on building a ladder, have a look at our anxiety ladder guide.

What can I do before a blood test or vaccine?

A few simple preparations before a blood test or vaccine can help reduce the risk of fainting and your anxiety.

Tell the healthcare worker in advance about your history of fainting and your fear.
If possible, ask to have the procedure lying down.
Unless your doctor has told you otherwise, drink enough water beforehand and try not to be hungry (except for tests that must be done on an empty stomach).
During the procedure, use applied tension with your other large muscles without tensing the arm the needle goes into.
Don't jump up right after the procedure; rest for a few minutes sitting or lying down.

What else can help reduce a fear of needles?

Alongside applied tension, managing your attention and working with the healthcare team can make procedures more bearable. The following tips can be especially helpful in the first steps:

You choose whether to look: Not looking at the needle at first is understandable. As you progress, you can try looking briefly as part of gradual exposure.
Redirect your attention: Chatting with the healthcare worker, counting objects in the room or singing a song in your head can distract you.
Ask about pain-relief options: For some procedures, options such as a numbing cream or spray may be available. Ask your doctor or pharmacist whether this is suitable for you.
Have someone with you: Having someone you trust with you can be supportive at first; over time, aim to rely on this support less.
Question your thoughts: "I'll definitely faint and embarrass myself" is a prediction. Remember your past experiences, the precautions you've taken and that the healthcare team is used to this situation.
Plan for afterwards: Celebrating yourself with a small reward after the procedure can help your brain encode the experience more positively.

When should you seek professional help?

If fear makes you postpone necessary vaccines, tests or treatments, if you faint often, or if your fear makes a period that requires regular check-ups, such as pregnancy, harder, it's a good idea to work with a psychiatrist or clinical psychologist. If the cause of your fainting is unclear, a medical evaluation is needed first, because fainting can have other medical causes.

In short

In a fear of blood and needles, blood pressure can drop suddenly; that's why fainting is more common than with other phobias.
Applied tension aims to reduce the risk of fainting through a cycle of tensing the large muscles for 10–15 seconds and releasing them for 20–30 seconds.
If you have a heart condition or a history of unexplained fainting, consult your doctor before using the technique.