2023 Volume 30 Issue 7 Pages 174-177
Functional somatic symptoms are pain syndromes defined as “symptom complaints, distress, and disability greater than the degree of identifiable tissue damage”. We experienced two cases in which functional somatic symptoms appeared after vaccination with COVID-19 vaccines. The first case met the criteria for complex regional pain syndrome. Although the mechanism of the onset of functional physical symptoms caused by vaccination has not yet been fully elucidated, these two cases are believed to have developed functional physical symptoms due to a combination of psychological factors such as side effects of fever and pain, immobility due to side effects, anxiety and depression, which were never experienced. In addition to pain, these two cases had strong anxiety, which made social life difficult. The multidisciplinary treatment and social reintegration adjusted according to each patient's condition led to patient recovery.