23.03.2020: Severe coronavirus disease is associated with hyperinflammation. The Lancet recently published an article by Puja Mehta and colleagues, which discusses whether secondary haemophagocytic lymphohistiocytosis (HLH) may be associated with severe coronavirus disease (COVID-19) (1). Haemophagocytic lymphohistiocytosis, which is frequently described as a 'cytokine storm', is characterised by fulminant, fatal hypercytokinemia with multiple organ failure (2). This clinical picture may be triggered by viral infections in adults (3). The condition may also occur in patients with sepsis (4). Puja Mehta...