Methaemoglobinaemia is a rare but potentially dangerous haemoglobinopathy that is often underdiagnosed. It is one of the causes for unexplained cyanosis with dark-coloured blood. especially in the absence of cardiac or pulmonary pathology. Not uncommonly so. https://www.lightemupsequences.com/super-pick-Mystical-Skull-VooDoo-Doll-top-super/