A case of the efficacy of Kampo medicine
for relatively prolonged side effects following
coronavirus disease 2019 vaccine
Yasuhito Irie 1)2)※ Hajime Nakae 1) Saga Akiko 2) Haruka Hikichi 2)
Ken Watanabe 2) Kasumi Satoh 1)2) Toshiharu Kitamura 1)2) Shigeharu Ueki2)
1) Akita University Hospital Advanced Emergency and Critical Care Center
2) Akita University Hospital General Physician Center
Key Words：Coronavirus disease 2019, side effect, vaccine
[Case] A 28-year-old man presented with fatigue, headache, bilateral shoulder pain, chills, and
diarrhea. Although he was healthy, his symptoms appeared on the day after vaccination with his second dose of the Pfizer-BioNTech vaccine. He visited our outpatient clinic for Kampo medicine treatment on day 10. Based on the clinical course, the patient was considered to have vaccineinduced side effects, and keishito was prescribed according to the Eastern medicine findings. On day 13, his sweating disappeared, and headache and chills showed improvement；however, shoulder pain and fatigue persisted. On day 27, purple spots on the tongue were considered blood stasis, so the patient was prescribed tsudosan, which improved his shoulder pain. On day 52, the numeric rating scale score was 1 point, indicating a trend toward improvement.
[Discussion] Side effects are typically common following vaccination as the body is building immunity to antigens；however, they usually subside within a few days. Western medicine alone cannot maintain the quality of life of patients experiencing prolonged symptoms.
[Conclusions] Kampo medicine can be used to develop complementary medical treatments, even in clinical areas where evidence is yet to be accumulated.