Abstract Introduction/Aims Although we have gained insight into coronavirus disease‐2019 (COVID‐19) caused by severe acute respiratory syndrome–coronavirus 2 since the beginning of the pandemic, our understanding of the consequences for patients with neuromuscular disorders is evolving. In this study we aimed to study the impact of COVID‐19 and COVID‐19 vaccination on skeletal muscle channelopathies. Methods We conducted a survey of patients with genetically confirmed skeletal muscle channelopathies seen at the UK Nationally Commissioned Channelopathy Service. Results Thirty‐eight patient responses were received. Six patients had COVID‐19 infection leading to exacerbation of their underlying muscle channelopathy. No major complications were reported. Thirty‐six patients had received one or two COVID‐19 vaccinations and the majority (68) had no worsening of their underlying channelopathy. Thirty‐two percent reported worsening of their usual symptoms of their muscle channelopathy, but all reported recovery to baseline levels. No serious adverse events were reported. Discussion The overall rates of COVID‐19 infection were low in our study and COVID‐19 vaccine uptake rates were high. Our results have been useful to inform patients that a subset of patients have reversible worsening of their channelopathy post–COVID‐19 vaccination. Our study provides information for giving advice to patients with skeletal muscle channelopathies regarding COVID‐19 infection and vaccination.
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