Original Article:
http://www.mayoclinic.com/health/biofeedback/SA00083


Biofeedback: Using your mind to improve your health
Have you ever wished you could simply will your symptoms to disappear? With biofeedback you may be able to rely less on medication and more on the power of your mind.

What is biofeedback?
Biofeedback uses your mind to control your body. Biofeedback is a type of complementary and alternative medicine called mind-body therapy. Using feedback from a variety of monitoring procedures and equipment, a biofeedback specialist will try to teach you to control certain involuntary body responses, such as:

Brain activity
Blood pressure
Muscle tension
Heart rate
Once you learn to recognize and control these responses, you can use biofeedback to help treat a wide range of mental and physical health problems. Even if you don't have a specific disease or condition, biofeedback may help your overall health and sense of well-being.

What conditions benefit from biofeedback?
Biofeedback has been shown to be helpful in treating about 150 medical conditions, including:

Asthma
Raynaud's disease
Irritable bowel syndrome
Hot flashes
Nausea and vomiting associated with chemotherapy
Incontinence
Headaches
Irregular heartbeats (cardiac arrhythmias)
High blood pressure
Epilepsy
Clinical trials are evaluating biofeedback in other conditions as well.

What happens during a biofeedback session?
You can receive biofeedback training in physical therapy clinics, medical centers and hospitals. A typical biofeedback session lasts 30 to 60 minutes.

During a biofeedback session, a therapist will apply electrical sensors to different parts of your body. These sensors will monitor your body's physiological response to stress — for instance, your muscle contraction during a tension headache — and then feed the information back to you via auditory and visual cues. These cues may take the form of a beeping sound or a flashing light. With this feedback, you'll start to associate your body's response — in this case, pain — with certain physical functions, such as your muscles tensing.

Once you begin to recognize that your headache, in this case, is a result of tense muscles, the next step is to learn how to invoke positive physical changes in your body, such as relaxing those specific muscles, when your body is physically or mentally stressed. Your eventual goal will be to produce these responses on your own, outside the therapist's office and without the help of technology.

Types of biofeedback
Your therapist may use several different techniques to gather information about your body's responses. Determining the one that's right for you will depend on your particular health problems and objectives. Machines and techniques include:

Electromyogram (EMG). An EMG uses electrodes or other types of sensors to measure muscle tension. By the EMG alerting you to muscle tension, you can learn to recognize the feeling early on and try to control the tension right away. EMG is mainly used to promote the relaxation of those muscles involved in backaches, headaches, neck pain and grinding your teeth (bruxism). An EMG may be used to treat some illnesses in which the symptoms tend to worsen under stress, such as asthma and ulcers.
Temperature biofeedback. Sensors attached to your fingers or feet measure your skin temperature. Because your temperature often drops when you're under stress, a low reading can prompt you to begin relaxation techniques. Temperature biofeedback can help treat certain circulatory disorders, such as Raynaud's disease, or reduce the frequency of migraines.
Galvanic skin response training. Sensors measure the activity of your sweat glands and the amount of perspiration on your skin, alerting you to anxiety. This information can be useful in treating emotional disorders such as phobias, anxiety and stuttering.
Electroencephalogram (EEG). An EEG monitors the activity of brain waves linked to different mental states, such as wakefulness, relaxation, calmness, light sleep and deep sleep.
Finding a biofeedback therapist: Ask questions
Once you decide to try biofeedback, you'll need to find a qualified biofeedback therapist. Contact the Biofeedback Certification Institute of America (BCIA) and ask for the names of people certified in your area. BCIA therapists must be licensed in another area of health care — for instance, as a physical therapist — or be working under the guidance of a health care professional. They should be accustomed to working with patients, and you can expect them to have a good bedside manner.

If you can't find a BCIA-certified therapist in your area, ask your doctor or another medical expert with knowledge of complementary and alternative medicine to recommend someone who has experience in treating the specific symptoms that are bothering you. As with any health care practitioner, you may have to meet with several individuals to find the one with whom you feel most comfortable.

Be sure to ask each therapist to provide references. Find out the therapist's other areas of professional expertise, and whether he or she has experience treating the specific problem for which you're seeking help. Check to see whether your health insurer will cover the cost of treatment.

Pros and cons of biofeedback
Biofeedback may appeal to you for several reasons:

It can reduce, or even eliminate, your need for medication.
It has the potential to help conditions that have not responded to medication.
It helps puts you in charge of your own healing by providing measurable feedback, allowing you to monitor your progress and learning.
It can decrease your medical costs.
On the other hand, you may be hesitant to try biofeedback because experts aren't entirely sure how the therapy works. Many people who have tried biofeedback can't explain how they're able to control their bodies to relieve their symptoms.

To truly assess whether biofeedback is effective in treating your particular symptoms, keep a daily diary to monitor your use of the treatment as well as how you feel before, during and after the therapy.

Although biofeedback is considered safe, talk to a doctor knowledgeable about this form of complementary and alternative medicine if you have depression, severe psychosis, diabetes or other endocrine disorders. Biofeedback can interfere with the use of some medications, such as insulin.




By Mayo Clinic Staff
Jan 26, 2006
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