Somatic symptom disorder involves excessive worry and distress about physical symptoms that may or may not have a clear medical cause. Understanding when and how these symptoms are diagnosed can help people get the support they need to manage this challenging condition.

Introduction: Who Should Undergo Diagnostics

People who experience physical symptoms that cause significant distress or interfere with their daily life may need diagnostic evaluation for somatic symptom disorder. This condition is not about faking symptoms—the physical pain, fatigue, or other sensations are real. However, the way a person thinks about, feels about, and responds to these symptoms is what defines the disorder. The excessive worry and anxiety surrounding the symptoms often become more disabling than the symptoms themselves.^[1]

A person should consider seeking diagnostic evaluation if they find themselves spending excessive amounts of time and energy worrying about their health, visiting multiple doctors without finding answers, or if their concern about symptoms is preventing them from working, maintaining relationships, or enjoying activities they once loved. Often, individuals with this condition have undergone numerous medical tests that show normal results, yet they continue to feel certain that something serious is wrong.^[3]

The condition typically begins before age 30, though it can start in childhood or adolescence. Women are diagnosed with somatic symptom disorder about ten times more frequently than men. People with a history of childhood neglect, sexual abuse, a chaotic lifestyle, or substance abuse may be at higher risk for developing this condition. Additionally, those experiencing unemployment, impaired work functioning, or other significant psychosocial stressors may be more vulnerable.^[2]

It’s important to note that having real medical conditions does not exclude someone from also having somatic symptom disorder. In fact, some people with diagnosed physical illnesses may react in ways that are disproportionate to their condition. For example, someone who has fully recovered from a heart attack might continue behaving as if they are severely ill or constantly worry about having another heart attack, despite medical reassurance.^[8]

Diagnostic Methods

Diagnosing somatic symptom disorder requires a comprehensive approach that looks at both physical and psychological aspects of a person’s health. There are no laboratory tests or imaging studies that can definitively confirm this diagnosis. Instead, healthcare providers rely on a combination of medical evaluation, clinical interviews, and assessment tools to understand the full picture of what a person is experiencing.^[3]

Physical Examination and Medical Testing

The diagnostic process typically begins with a thorough physical examination and any necessary medical tests to rule out actual physical causes for the symptoms. This is an essential first step because doctors must ensure they are not missing a genuine medical condition. The types of tests performed depend on what symptoms the person is experiencing. For instance, someone complaining of chest pain might need heart-related tests, while someone with chronic fatigue might need blood work to check for thyroid problems or anemia.^[9]

Healthcare providers must be careful to avoid ordering excessive or unnecessary tests, as people with somatic symptom disorder often pressure doctors for additional testing even after thorough evaluation has shown negative results. Each new round of testing can actually reinforce the person’s belief that something is seriously wrong, making the condition worse rather than better.^[8]

Psychological Evaluation

After ruling out or identifying any physical causes for symptoms, a healthcare provider typically refers the person to a mental health professional for a psychological evaluation. This evaluation is crucial for diagnosing somatic symptom disorder. The mental health professional will conduct an in-depth interview to discuss the person’s symptoms, fears, concerns, stressful situations, relationship problems, and family history.^[9]

During this evaluation, the mental health professional may ask about situations the person is avoiding, how much time they spend thinking about their health, and how their symptoms affect their ability to function in daily life. They may also inquire about alcohol, drug, or other substance use, as these can be associated with somatic symptom disorder.^[9]

Screening Instruments and Questionnaires

Healthcare providers often use standardized screening tools to help identify somatic symptom disorder. One such tool is the Somatic Symptom Scale-8, which assesses the severity of various physical symptoms. Another commonly used questionnaire is the Patient Health Questionnaire-15, which screens for multiple physical symptoms that may not have a clear medical explanation.^[10]

These questionnaires ask people to rate the severity and frequency of various symptoms, such as pain, fatigue, digestive problems, and breathing difficulties. They also help healthcare providers understand how much distress these symptoms cause and how they impact the person’s ability to work, socialize, and care for themselves.^[10]

Diagnostic Criteria According to DSM-5

Mental health professionals use specific criteria outlined in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) to diagnose somatic symptom disorder. According to these criteria, a person must have one or more physical symptoms that are distressing or disrupt daily life. These symptoms must be accompanied by at least one of the following: disproportionate and persistent thoughts about the seriousness of the symptoms, persistently high anxiety about health or the symptoms, or excessive time and energy devoted to the symptoms or health concerns.^[9]

Importantly, the symptoms must continue for more than six months, although the specific symptoms themselves may vary or change during that time. The diagnosis emphasizes the person’s psychological and behavioral response to physical symptoms rather than requiring that the symptoms be medically unexplained. This represents a significant change from previous diagnostic criteria, acknowledging that people can have both real medical conditions and somatic symptom disorder at the same time.^[2]

Ruling Out Other Conditions

Healthcare providers must carefully distinguish somatic symptom disorder from other conditions that may appear similar. For example, illness anxiety disorder (previously known as hypochondria) involves excessive worry about having or developing a serious disease, but unlike somatic symptom disorder, people with illness anxiety disorder typically have few or no actual physical symptoms—their anxiety is about the possibility of becoming sick.^[4]

Conversion disorder, also called functional neurological symptom disorder, involves symptoms affecting movement, sensation, or perception that have no neurological or physical cause. While people with conversion disorder may experience anxiety or depression, excessive worry about the symptoms is not a defining feature of the condition, whereas it is central to somatic symptom disorder.^[4]

Doctors must also consider medical conditions that can mimic somatic symptom disorder, such as multiple sclerosis, systemic lupus erythematosus (lupus), fibromyalgia, chronic fatigue syndrome, and irritable bowel syndrome. These conditions often involve symptoms that are difficult to diagnose and may fluctuate over time, making careful medical evaluation essential.^[5]

Diagnostics for Clinical Trial Qualification

Information about specific diagnostic tests or criteria used to qualify patients for clinical trials related to somatic symptom disorder was not available in the provided sources. Clinical trials for mental health conditions typically require participants to meet specific diagnostic criteria and may involve screening questionnaires to assess symptom severity, but detailed protocols for somatic symptom disorder trial enrollment were not described in the materials reviewed.