Haemophagocytic lymphohistiocytosis (HLH): case series in tertiary referral hospital over three years.

Haemophagocytic lymphohistiocytosis (HLH) is a rare but potentially fatal disease of normal but overactive histiocytes and lymphocytes that commonly appears in infancy, although it has been seen in all age groups. We are reporting a series of 5 cases of HLH in young adult and paediatric patients identified over three years.