Feel like their whole body is sick, may be hypochondria, somatic symptom disorder, anxiety disorder, etc., as follows: a. Hypochondria: hypochondriacs are always worried that they have a terminal disease, repeatedly go to the hospital for examination and consultation, although the test results are not abnormal, but they are still convinced that they have a terminal disease, feel like their whole body has a disease, so they will be very painful and anxious. Second, somatic symptom disorder: Patients with somatic symptom disorder always feel uncomfortable, such as headache, dizziness, nausea, vomiting, and discomfort all over the body, feeling that their whole body has diseases. Third, anxiety disorder: It may be a problem of anxiety disorder, because anxiety disorder will be accompanied by the manifestation of somatic symptoms, especially panic, hand trembling, sweating, etc., which will make people feel that their whole body is sick, very weak, very anxious and worried about their health.