Schools are under fire for penalising pupils who suffer from a rare blood condition that mainly affects people from African and Caribbean backgrounds.
Campaigners say schools and workplaces are failing to support people with sickle-cell disease, an invisible condition that affects 15,000 people in the UK.
Sickle-cell anaemia is a hereditary disease in which the body produces unusually shaped red blood cells that clump together, blocking blood vessels. This results in painful episodes called sickle-cell crises, which can last for months, as well as organ failure and, in some cases, death.
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