Mental HealthICD-10: F45.21Fairly common, particularly in primary care and hospital settings; often unrecognized

Health Anxiety

Also known as: Illness anxiety disorder, Hypochondria

Health anxiety is a persistent, excessive fear of having or developing a serious illness, even when medical tests are reassuring. People with health anxiety tend to interpret ordinary bodily sensations, such as a headache, a muscle twitch, or a fast heartbeat, as signs of something catastrophic. They may check their bodies repeatedly, search symptoms online for hours, seek frequent medical reassurance, or, conversely, avoid doctors altogether out of fear. The relief from reassurance is short-lived, and the worry returns. Health anxiety is a recognized condition (illness anxiety disorder, or somatic symptom disorder when physical symptoms are prominent) and responds well to cognitive behavioral therapy and, where needed, medication.

At a Glance

Common symptoms
Preoccupation with having or getting a serious illness, lasting six months or more, Interpreting normal sensations as evidence of disease, Repeatedly checking the body for lumps, marks, or changes
Main treatments
Cognitive behavioral therapy focused on health anxiety, including reducing checking and reassurance-seeking, SSRI antidepressants when symptoms are moderate to severe or CBT alone is insufficient, A consistent care plan with one doctor to reduce repeated investigations and emergency visits
Category
Mental Health · Fairly common, particularly in primary care and hospital settings; often unrecognized
See a doctor if
Health worries occupy a large part of your day or interfere with work and relationships

Symptoms

Preoccupation with having or getting a serious illness, lasting six months or more
Interpreting normal sensations as evidence of disease
Repeatedly checking the body for lumps, marks, or changes
Frequently seeking reassurance from doctors, family, or the internet
Avoiding medical care, hospitals, or health information out of fear
Anxiety that persists despite normal test results
Difficulty concentrating or sleeping because of health worries

Causes

  • A tendency to focus on bodily sensations and interpret them as threatening
  • Learned beliefs about illness from childhood, such as a seriously ill relative
  • Personal experience of a frightening illness or medical error
  • Stressful life events that raise overall anxiety
  • Genetic and temperamental predisposition to anxiety
  • Easy access to online health information that amplifies fear

Risk Factors

  • History of other anxiety disorders, OCD, or depression
  • Serious illness in childhood or in a close family member
  • Major stress or trauma
  • Health scares or ambiguous test results in the past
  • Habitual internet symptom searching

Diagnosis

  • Clinical interview exploring the nature, duration, and impact of health fears
  • Review of medical history and recent tests to ensure physical causes have been reasonably excluded
  • Questionnaires such as the Short Health Anxiety Inventory
  • Assessment for coexisting anxiety, OCD, panic disorder, or depression

Treatment

  • Cognitive behavioral therapy focused on health anxiety, including reducing checking and reassurance-seeking
  • SSRI antidepressants when symptoms are moderate to severe or CBT alone is insufficient
  • A consistent care plan with one doctor to reduce repeated investigations and emergency visits
  • Treatment of any coexisting depression or other anxiety disorder
  • Supportive: structured limits on symptom searching and body checking
  • Supportive: mindfulness and relaxation skills to tolerate uncertainty and bodily sensations
  • Supportive: regular exercise and good sleep, which reduce the baseline anxiety that feeds health worry

Prevention

  • Avoid searching symptoms online; use a trusted clinician instead
  • Learn that bodily sensations fluctuate and are usually harmless
  • Treat general anxiety and stress early
  • Attend routine, age-appropriate screening rather than repeated reactive testing
  • Build tolerance of uncertainty rather than seeking certainty through checks

When to See a Doctor

  • Health worries occupy a large part of your day or interfere with work and relationships
  • You are repeatedly seeking tests or reassurance without lasting relief
  • You are avoiding necessary medical care because of fear
  • Anxiety is causing physical symptoms such as palpitations, insomnia, or stomach upset
  • You feel depressed or hopeless about your health

Frequently Asked Questions

Related Conditions

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