What is the Fibromyalgia Impact Questionnaire (FIQ)

The Fibromyalgia Impact Questionnaire is something that I encounter a lot when reviewing research into fibromyalgia as it is often used in studies to see how something affects a person's fibromyalgia symptoms.


The Fibromyalgia Impact Questionnaire (FIQ) is an assessment and evaluation tool developed to measure fibromyalgia (FM) patient status, progress and outcomes. It has been designed to measure the areas of health that are believed to be most affected by FM. It is in the form of a two page questionaire with a further two pages of description and scoring. It is designed for the FM patient to fill out themself.


The FIQ was developed for adults with fibromyalgia. Doctors used patient reports, functional status instruments, and clinical observations to create it. 

The original Fibromyalgia Impact Questionnaire was developed in the late 1980s by Drs. Carol Burckhardt, Sharon Clark and Robert Bennett at Oregon Health & Science University in Portland, Oregon USA. At that time the clinical features of fibromyalgia were just being described, and the FIQ was an attempt to capture the total spectrum of problems related to fibromyalgia and the responses to therapy. The FIQ was first published in 1991 and since that time has been extensively used as an index of disease activity and therapeutic efficacy. Its development is described in separate reviews by Dr. Burckhardt and Dr. Bennett. Several issues regarding ethocultural usage, symptom relevance and arcane scoring became apparent and these issues have been addressed in the revised version FIQR. American College of Rheumatology


It measures physical functioning, work difficulty, including housework, morning tiredness, pain, stiffness, fatigue, and well-being including depression and anxiety, over the past week.


There are 20 questions in total. The first 11 relate to physical functioning and are rated on a 4 point scale. Most of the other questions use a horizontal linear scales marked in 10 increments on which the patient rates how they felt overall.

The FIQ is scored in such a way that a higher score indicates a greater impact of the syndrome on the person. Each of the 10 items has a maximum possible score of 10. Thus the maximum possible score is 100. The average FM patient scores about 50, severely afflicted patients are usually 70 plus.

Get the Fibromyalgia Impact Questionnaire (FIQ) pdf.

The FIQ is a useful measure of disease impact in patients with fibromyalgia. It has shown good responsiveness to change in clinical studies. 

It is a useful instrument for measuring the changes in groups of patients in treatment programs and clinical trials.  Whether it is beneficial for helping individuals and their health care providers plot changes as a result of individual treatment has not been formally tested but many clinicians use it for that purpose. ~ Dr. Carol Burckhardt.

Fibromyalgia Impact Questionnaire


  1. I really appreciate the explanation of this form and that you've provided it. I could see taking this every few months or so to use as a monitoring tool for myself.

    1. Yes, Katie I agree it is a great tool to use your self and many people with fibromyalgia have not even heard of the FIQ as it is mostly used in research studies.

  2. Great info. I'm not sure I've even been given this questionnaire before. It makes sense to have it though.

    1. Hi Shelley, I have only been given it in a pain group where we did it and other questionaires at the beginning and the end of the worksops over a 3 month period. The participants did not get an update though which i found strange. If i had have been more "with it" I would have photocopied my responses to see the improvements. they wanted it for their funding to prove if their workshops were beneficial.


Thanks for your input