Une cause rare de cyanose : sulfhémoglobinémie imputable au thiocolchicoside (Miorel®)

This report underlines the importance of searching for an acquired abnormality of haemoglobin (methaemoglobinaemia or sulphaemoglobinaemia) in patients with cyanosis resistant to oxygen, in the absence of any cardiorespiratory abnormality. This case is the first to suspect thiocolchicoside as a possible cause of sulphaemoglobinaemia.