Anxiety · October 23, 2026
Illness Anxiety Disorder: Signs, Causes, and When to Seek Help
By Kathie Bolles, PMHNP-BC
Illness anxiety disorder is a persistent, consuming fear of having or developing a serious illness, even when medical evaluations find no concerning cause. The American Psychiatric Association classifies it as a somatic symptom and related disorder, and the worry itself causes real distress or disruption in daily life. At Mynd Works Psychiatry in Austin, TX, anxiety care begins with a thorough evaluation, and treatment may include psychotherapy, medication management, or both, in person or by telehealth.
What does illness anxiety disorder feel like?
People with illness anxiety disorder spend significant time worrying that they are sick or will become seriously ill, even when examination, testing, and reassurance point to the opposite. The worry is not just occasional: according to the Merck Manual, the preoccupation has typically lasted at least six months, though the specific illness the person fears may change over time.
Some people respond by checking, such as repeated body checks, frequent doctor visits, or hours of online symptom searching. Others respond by avoiding, staying away from doctors, hospitals, or health information altogether. Both patterns can pull time and attention away from work, family, and everyday life.
How is illness anxiety different from normal health worry?
Most people worry about their health occasionally, especially after a new symptom or a difficult diagnosis for someone close to them. Illness anxiety disorder is different in degree and persistence: the concern is disproportionate to any actual medical risk, continues in the face of reassuring evaluations, and interferes with daily functioning.
The APA notes that illness anxiety disorder is distinct from somatic symptom disorder. In somatic symptom disorder, prominent physical symptoms are present and drive the distress. In illness anxiety, physical symptoms are absent or mild; the fear of illness is the central problem.
What causes illness anxiety disorder?
The causes are not fully understood, and it is honest to say so. Personal experience with serious illness, caring for someone who was seriously ill, or a childhood marked by illness can shape how a person interprets normal body sensations. Anxiety sensitivity, stressful life events, and learned patterns of seeking reassurance may also play a role.
What matters clinically is not finding a single cause but recognizing the pattern early, because the evidence-based treatments are well established and work best when worry has not consumed years of a person's life.
How is illness anxiety disorder treated?
Cognitive behavioral therapy (CBT) is the most widely supported psychological treatment for health anxiety. It helps people recognize how catastrophic thoughts, body checking, and reassurance seeking keep the fear alive, and it builds more helpful responses to normal bodily sensations and health information.
Some people also benefit from medication, such as certain antidepressants, used alongside therapy. Decisions about medication are individualized and made collaboratively with a clinician. A supportive relationship with one trusted provider, rather than repeated testing across many providers, is often a key part of treatment.
When should you consider an evaluation?
It may be worth a professional evaluation when health worry occupies a large part of your day, persists for months, leads to repeated emergency visits or avoidance of needed care, or strains your relationships and work. These patterns are treatable, and you do not have to sort it out alone.
If worry or anxiety is one of several concerns, the guide on when to seek help for anxiety offers a practical starting point.
How does care at Mynd Works work?
Care starts with a psychiatric evaluation: an unhurried conversation about your history, symptoms, and goals, followed by an individualized treatment plan. Depending on your situation, that plan may include psychotherapy, medication management, or both, with progress reviewed over time.
To begin, request a consultation or call Mynd Works Psychiatry at (512) 739-6566. The practice is located at 1301 S. Capital of Texas Hwy, Ste A-138, Austin, TX 78746, and serves Austin and surrounding communities within approximately 50 miles.
Common questions
Is illness anxiety disorder the same as hypochondria?
The term hypochondriasis is outdated. In the current diagnostic system, DSM-5, what was once called hypochondriasis was redefined into illness anxiety disorder and somatic symptom disorder based on whether prominent physical symptoms are present.
Can medication help illness anxiety disorder?
For some people, medication such as certain antidepressants can help when used alongside therapy. Any medication decision is individualized and made collaboratively with a qualified clinician.
Does Mynd Works evaluate and treat illness anxiety in Austin?
Yes. Anxiety evaluation and treatment are part of the care Mynd Works offers, in person in Austin or by secure telehealth where clinically appropriate. You can request a consultation to discuss your situation.
Is illness anxiety disorder an emergency?
No. It is not an emergency condition. If you are in crisis or experiencing a medical emergency, call 911 or go to the nearest emergency department.
