People with IAD are overly focused on, and always thinking about, their physical health. They have an unrealistic fear of having or developing a serious disease. This disorder occurs equally in men and women.

The way people with IAD think about their physical symptoms can make them more likely to have this condition. As they focus on and worry about physical sensations, a cycle of symptoms and worry begins, which can be hard to stop.

It is important to realize that people with IAD do not purposely create these symptoms. They aren't able to control the symptoms.

People who have a history of physical or sexual abuse are more likely to have IAD. But this doesn't mean that everyone with IAD has a history of abuse.

People with IAD can't control their fears and worries. They often believe any symptom or sensation is a sign of a serious illness.

They seek out reassurance from family, friends, or health care providers on a regular basis. They feel better for a short time and then begin to worry about the same symptoms or new symptoms.

Symptoms may shift and change, and are often vague. People with IAD often examine their own body.

Some may realize that their fear is unreasonable or unfounded.

IAD is different from somatic symptom disorder. With somatic symptom disorder, the person has physical pain or other symptoms, but the medical cause isn't found.

The provider will perform a physical exam. Tests may be ordered to look for illness. A mental health evaluation may be done to look for other related disorders.

It is important to have a supportive relationship with a provider. There should be only one primary care provider. This helps avoid having too many tests and procedures, some of which may be harmful.

Finding a mental health provider who has experience treating this disorder with talk therapy can be helpful. Cognitive behavioral therapy (CBT), a kind of talk therapy, can help you deal with your symptoms. During therapy, you will learn:

• To recognize what seems to make the symptoms worse
• To develop methods of coping with the symptoms
• To keep yourself more active, even if you still have symptoms

Antidepressants can help reduce the worry and physical symptoms of this disorder if talk therapy has not been effective or only partially effective.

The disorder is usually long-term (chronic), unless psychological factors or mood and anxiety disorders are treated.

Complications of IAD may include:

• Complications from invasive medical testing to look for the cause of symptoms
• Dependence on pain relievers or sedatives
• Depression, anxiety, or panic disorder
• Lost time from work due to frequent appointments with providers

Contact your provider if you or your child has symptoms of IAD.

Somatic symptom and related disorders; Hypochondriasis

American Psychiatric Association website. Illness anxiety disorder. Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR), Washington, DC: American Psychiatric Association Publishing; 2022.

Morfin Rodriguez AE, Kontos N, Beach SR, Smith FA, Greenberg DB. Somatic symptom disorders. In: Stern TA, Wilens TE, Fava M, eds. Massachusetts General Hospital Comprehensive Clinical Psychiatry. 3rd ed. Philadelphia, PA: Elsevier; 2025:chap 24.

Updated by: Fred K. Berger, MD, addiction and forensic psychiatrist, Scripps Memorial Hospital, La Jolla, CA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.