SSD: distressing somatic symptoms with disproportionate thoughts/behaviors. IAD (formerly hypochondriasis): preoccupation with having illness despite few or no somatic symptoms.
Also known as: SSD, somatization, illness anxiety disorder, IAD, hypochondriasis
Overview
Somatic Symptom Disorder (DSM-5-TR): ≥1 distressing or disruptive somatic symptom + excessive thoughts, feelings, or behaviors about the symptom (disproportionate, persistent anxiety, or excessive time/energy devoted to symptoms or health) lasting >6 months. Symptoms may or may not have a medical explanation. Illness Anxiety Disorder: preoccupation with having or acquiring a serious illness, somatic symptoms are absent or mild, high anxiety about health, excessive checking or care avoidance, ≥6 months. Replaces DSM-IV hypochondriasis.
Epidemiology
SSD prevalence ~5-7% in general adult population, higher in primary care. IAD ~1.3-10%. Both more common in women. Onset typically before age 30 for SSD; broader range for IAD. Frequent healthcare utilization.
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Question 1PsychiatryMedium
A 34-year-old woman presents for her fifth visit in 3 months for migrating abdominal pain, fatigue, and intermittent palpitations. She has seen three specialists, and prior CBC, metabolic panel, abdominal ultrasound, and ECG have all been normal. She spends hours daily worrying that something serious is being missed and frequently calls the office seeking reassurance. Vital signs and physical exam are normal. She meets criteria for somatic symptom disorder. Which of the following is the most appropriate initial management?
ASchedule regular brief visits with one primary care provider
BRefer to gastroenterology for repeat endoscopic evaluation
CReassure her that the negative workup excludes disease
DPrescribe a low-dose benzodiazepine for symptom-related worry
Reveal answer & full explanation
Correct answer: A — Schedule regular brief visits with one primary care provider
ASchedule regular brief visits with one primary care provider✓
BRefer to gastroenterology for repeat endoscopic evaluation
CReassure her that the negative workup excludes disease
DPrescribe a low-dose benzodiazepine for symptom-related worry
Why Schedule regular brief visits with one primary care provider is correct
The cornerstone of somatic symptom disorder management is a structured, continuous relationship with ONE primary care provider, with short visits scheduled at fixed intervals (every 4-6 weeks) rather than triggered by new symptoms.
This model validates the patient's suffering, reduces emergency visits and unnecessary testing, and breaks the reassurance-seeking cycle; cognitive behavioral therapy (best evidence) and SSRIs are layered onto this foundation.
Why the others are wrong
Refer to gastroenterology for repeat endoscopic evaluation — repeat specialist referral and testing after a negative workup reinforces illness behavior and risks iatrogenic harm; care should be coordinated, not fragmented across specialists.
Prescribe a low-dose benzodiazepine for symptom-related worry — benzodiazepines are explicitly avoided in SSD because of dependence risk and lack of benefit; SSRIs are the preferred agent when medication is needed for comorbid anxiety or depression.
Reassure her that the negative workup excludes disease — repeated reassurance relieves this patient only transiently and reinforces the calling-and-checking cycle; the goal is to acknowledge that her symptoms are real and shift focus toward function within scheduled visits, not to argue her out of the illness.
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Family history of somatization or anxiety disorders
Comorbid depression and anxiety
History of medical illness in self or family
Personality traits: high neuroticism, alexithymia
Female sex (SSD)
Online health-information seeking (cyberchondria as IAD subset)
Pathophysiology
Heightened interoceptive perception with maladaptive cognitive appraisal — benign sensations interpreted as dangerous. Insular cortex and anterior cingulate hyperactivity. HPA-axis dysregulation in some patients. Learned illness behavior and reinforcement contribute.
Clinical presentation
Symptoms
SSD: multiple or single distressing somatic symptoms — pain, fatigue, GI complaints, neurologic sensations; disproportionate worry, doctor-shopping, repeated reassurance-seeking
IAD: preoccupation with having or developing serious illness; minimal or no actual symptoms; checking body, researching diseases, or paradoxically avoiding medical care
Symptoms often shift over time
Signs / physical exam
Exam often normal or with findings disproportionate to symptom report
Body dysmorphic disorder — Focus is on perceived appearance defect, not illness
Delusional disorder, somatic type — Fixed false belief held with delusional intensity
Diagnostic workup
Diagnostic criteria
SSD: ≥1 distressing somatic symptom + excessive symptom-related thoughts/feelings/behaviors (high anxiety, disproportionate concerns, excessive time/energy) ≥6 months. IAD: preoccupation with serious illness, mild/absent somatic symptoms, high health anxiety, excessive checking or care avoidance, ≥6 months.
Labs
Targeted workup based on presenting symptoms — avoid both undertesting AND escalating testing in response to anxiety
Imaging
Imaging only with clear clinical indication; repeat imaging without new findings tends to reinforce illness behavior
Diagnostic algorithm
Feature
Somatic Symptom Disorder
Illness Anxiety Disorder
Core problem
Distress and disproportionate response to somatic symptoms
Preoccupation with having/acquiring serious illness
Somatic symptoms
Present (≥1, distressing)
Absent or mild
Health anxiety
Often present
Prominent and central
Behavior
Excessive time, doctor-shopping, reassurance-seeking
Care-seeking subtype OR care-avoidant subtype
Duration
≥6 months
≥6 months
First-line tx
Regular PCP visits + CBT ± SSRI
CBT ± SSRI
Distinguishing somatic symptom disorder from illness anxiety disorder (formerly hypochondriasis) per DSM-5-TR.
Treatment
First-line
Establish a single primary care home; schedule regular brief visits (every 4-6 weeks) NOT contingent on new symptoms — reduces emergency visits and testing
Validate the experience of suffering without endorsing or refuting symptom interpretation
SSRIs (especially for comorbid anxiety/depression): fluoxetine, sertraline, paroxetine
Second-line / adjunct
Mindfulness-based therapy, acceptance and commitment therapy
Treat comorbid depression and anxiety
Limit unnecessary specialist referrals and testing; coordinate care
Complications
Iatrogenic harm from repeated testing, procedures, and polypharmacy
Substance use, especially opioid and benzodiazepine dependence
Major depression, suicide
Functional disability, occupational loss
Damaged therapeutic relationships and provider burnout
PANCE pearls
DSM-5-TR eliminated the requirement that symptoms be 'medically unexplained' — the disorder is defined by the disproportionate response, not by absence of disease.
Patients with SSD or IAD CAN have real medical illness; do not anchor diagnostically.
The most effective intervention is a structured, regular relationship with one primary care provider.
CBT is more durable than medication; combine when comorbid mood/anxiety disorders are present.
Cyberchondria (compulsive online symptom searching) is a modern variant of IAD and predicts higher distress.
References
DSM-5-TR — American Psychiatric Association. DSM-5-TR. 2022.
Cochrane 2014 — van Dessel N et al. Non-pharmacological interventions for somatoform disorders and medically unexplained physical symptoms in adults. Cochrane Database Syst Rev 2014;11:CD011142.
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