Related Experiment Video
Updated: Oct 11, 2025

The Use of Thermal Infra-Red Imaging to Detect Delayed Onset Muscle Soreness
Published on: January 22, 2012
[A red and swollen arm after vaccination for covid-19]
Dave De Mik1,2, Linda J Schot1, Bastiaan Privé1
1GGD.
Abstract:
In this case report, we present a 41-year old male with a red rash on his arm 7 days post vaccination with the mRNA Moderna vaccine. While the patient received antibiotics for the suspicion of a cellulitis, this was actually a delayed type 4 local allergic reaction to the vaccine or a so called 'Covid arm'. This reaction occurs frequently, is usually self-limiting and a conservative treatment is recommended. Conflict of interest and financial support: none declared.
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