What Is Illness Anxiety Disorder?

Staying up all night self-diagnosing terminal illnesses with WebMD? The Savvy Psychologist explains what it means to have Illness Anxiety Disorder, and how to ease your mind.

Dr. Monica Johnson
4-minute read
Episode #357
The Quick And Dirty

9 Signs and Symptoms of Illness Anxiety Disorder

  1. All-or-nothing thinking
  2. Negative filter
  3. Rejecting positive information
  4. Jumping to conclusions
  5. Fortune telling
  6. Catastrophizing
  7. Overgeneralization
  8. Emotional reasoning
  9. Intolerance of uncertainty

Recently, the Savvy Psychologist email inbox received the following message from listener James: “I have a fear of having or developing an illness, not necessarily dying, but the fear that maybe someday I will be diagnosed with a disabling illness. I spend a lot of time on WebMD researching illnesses that I'm convinced I have.”

Well James, it sounds like you could have Illness Anxiety Disorder.

Illness Anxiety Disorder (IAD) may not be familiar to you, but here’s a word which may be: hypochondriac. Hypochondriasis used to be a medical diagnosis, but has been split into two new diagnoses: Somatic Symptom Disorder and Illness Anxiety Disorder. We will focus on the latter, as it relates to James’ question.

What is Illness Anxiety Disorder?

According to the DSM-5 (AKA, the bible of psychological diagnoses), Illness Anxiety Disorder is defined by the following symptoms:

  • Preoccupation with having or developing a debilitating or life-threatening illness.
  • The patient doesn't actually have any physical symptoms, or if they do, they're mild. If a medical condition is present or the patient is high-risk for developing a medical condition, their anxiety about it reaches epic proportions.
  • Typically, people with IAD are either care-seeking (that is, frequently performing health checks and going to the doctor), or care-avoidant (they avoid doctor's appointments entirely, for fear of what they might learn).

9 Signs and Symptoms of Illness Anxiety Disorder

  1. All-or-nothing thinking:  Seeing things in black-and-white categories, ignoring the shades of gray. For example: “I’m either healthy or I'm dying of an illness,” and, “If the test isn’t 100% accurate, what’s the point?!”
  2. Negative filter: You pick out a single negative detail and ignore everything else. For example, if your doctor said, “Your nausea is probably due to a stomach virus,” you might start dwelling on the word “probably” and begin thinking about more deadly causes of nausea and ignore the doctor’s main message that there’s no cause for concern.
  3. Rejecting positive information: For example, if your doctor said, “We’ve run the standard battery of tests and there are no indications of cancer,” you might insist that the test might be wrong. Similarly, you might discount non-lethal explanations of bodily complaints, such as assuming that your racing heart is a heart attack rather than a panic attack.
  4. Jumping to conclusions: Just because you have one cough, does not mean you have Covid-19. Your headache is not necessarily a brain tumor.
  5. Fortune telling: Assuming that your pessimistic expectations are true. For example, proclaiming that you know you would die from Covid if you got it.
  6. Catastrophizing: Viewing minor ailments as having terrible consequences. For instance, assuming that random aches and pains of the body are always a sign of an underlying terminal illness. 
  7. Overgeneralization: Taking one example as proof for a general rule (for example, “I feel tired today. I must have MS.”)
  8. Emotional reasoning: Treating your feelings as facts. For example, “There must be something physically wrong with me because otherwise, I wouldn’t feel so anxious.”
  9. Intolerance of uncertainty: Refusing to accept that uncertainty is a part of everyday life. For example, “Doctors must rule out all possible diseases” and “I must be completely certain that I’m healthy.”

Keep in mind that there is a relationship between your thinking, emotions, behaviors, and physiological responses. Therefore, if you think in these ways, you will only increase your worry and your physical discomfort.

Physical vs. Psychological Symptoms

Individuals with IAD may label subtle bodily changes as pathological. What does that mean? Here is a common example: A person may have a headache and be convinced that they have a brain tumor as a result. The stress of this thought leads to heart palpitations and nausea and increases their panic. They go to the hospital and are turned away and told that they are having an anxiety reaction. They go home and schedule appointments with several other specialists.

From this example, we can see how a subtle physical change (headache), combined with maladaptive thinking, can lead to increased anxiety and the arrival of other symptoms (heart palpitations and nausea).

If you have this disorder, it may be difficult to move forward without support. Psychotherapy is the primary form of treatment for IAD. Meanwhile, here are a few tips to help ease your illness anxiety:

  • Externalize your anxiety. Instead of telling yourself "I'm going to die," it might be helpful to instead say, "My illness anxiety is being loud today.”
  • Accept uncertainty. The goal is not to eliminate all anxiety, but to cope effectively with the anxiety that exists. There will always be a .00001% chance that you do have cancer, but spending 99% of your life engaging with that worry means that you aren’t maximizing the good in your daily experiences.
  • Decrease compulsive behaviors. Limit the amount of time you spend on WebMD, scanning your body, going to the doctor each time you have a minor ailment, and continually looking to family or friends for reassurance.
  • Examine cognitive distortions. Don’t accept your inner monologue as fact. Whenever negative self-talk arises, make a list of the evidence for and against the diagnosis. You will find that, in most cases, there is no substance to the worry. It’s like clickbait in your brain.

Naturally, some level of concern about your health and well-being is normal. But if it's getting to a point in which the worry is worse than the physical symptoms, then it might be time to see a qualified mental health professional.

Citations +
All content here is for informational purposes only. This content does not replace the professional judgment of your own mental health provider. Please consult a licensed mental health professional for all individual questions and issues.

About the Author

Dr. Monica Johnson

Dr. Monica Johnson is a clinical psychologist and owner of Kind Mind Psychology, a private practice in NYC that specializes in evidenced based approaches to treating a wide range of mental health issues (e.g. depression, anxiety, trauma, and personality disorders). Additionally, she has a focus on working with marginalized groups of people including BIPOC, LGBTQ+, and alternative lifestyles to manage minority stress. She is also dedicated to contributing to her field professionally through speaking, training, supervision, and writing. She routinely speaks at conferences, provides training and workshops at organizations, supervises mental health trainees, and co-authored a book for professionals on addressing race-based stress in therapy.

Dr. Johnson earned her bachelor's degree from the University of South Carolina, completed her Psy.D. at the Arizona School of Professional Psychology, and completed her postdoctoral training year at Cherokee Health Systems in Knoxville, TN. She currently lives in Manhattan where she indulges in horror movies, sarcasm, and intentional introversion. You can find her on Instagram and online at kindmindpsych.com

Got a question that you'd like Dr. Johnson to answer on Savvy Psychologist? You can send her an email at psychologist@quickanddirtytips.com or leave a voicemail for the Savvy Psychologist listener line by calling (929) 256-2191‬.