A young girl developed a life-threatening autoimmune condition called Macrophage Activation Syndrome after a minor rash, requiring chemotherapy treatment.

Six-year-old Esmae Smith from Southend-on-Sea developed a rash in hot weather and was rushed to Great Ormond Street Hospital on April 16, where she was diagnosed with life-threatening Macrophage Activation Syndrome (MAS), possibly triggered by Systemic Juvenile Idiopathic Arthritis (sJIA), and is now undergoing chemotherapy.