Somatisation means that physical symptoms are caused by biological, social, or psychological factors, not a specific disease. These symptoms, like pain or fatigue, can also be caused by medical conditions. Functional disorders are more complex and persistent forms of somatisation. A person with somatic symptom disorder has one or more somatic (physical) symptoms over a long period of time (usually half a year or more). Symptoms may or may not be explained fully by another medical diagnosis. The person may be reacting to normal bodily sensations or a minor illness. In somatoform disorders, physical symptoms suggest a physical disorder, but there are no demonstrable organic findings and there is strong evidence for link to psychological factors or conflicts. Somatic symptom disorder involves focusing too much on physical symptoms such as pain or tiredness. This focus causes major emotional distress and makes it hard to function. Somatoform disorder is a condition in which a person experiences real, distressing physical symptoms that cannot be fully explained by a medical disease or injury. Somatoform disorders involve physical symptoms suggesting illness or injury that any medical condition cannot fully explain. Symptoms are real and cause significant distress or impairment, but psychological factors like stress or trauma are likely involved in their manifestation. Somatic symptom disorder (SSD) is a mental health condition in which you feel significantly distressed about physical symptoms. You may have excessive thoughts, emotions and/or behaviors in response to the symptoms, which disrupt your daily functioning. This condition was formerly known as somatoform disorder. Somatic symptom disorder is diagnosed when a person has a significant focus on physical symptoms, such as pain, weakness or shortness of breath, to a level that results in major distress and/or problems functioning. Somatic symptom disorder (SSD) is a mental disorder characterized by an excessive focus on physical symptoms—such as pain or shortness of breath —that cause significant distress or impairment. Individuals with SSD experience disproportionate thoughts, emotions, and behaviors related to their symptoms. WebMD explains the symptoms and treatment of a somatoform disorder -- a mental disorder in which patients experience pain that can't be traced to any physical cause.