Justin Timberlake was ill for "months" before being diagnosed with Lyme disease.
The 44-year-old singer revealed last week he had contracted the tick-borne condition - which can cause symptoms ranging from nerve pain and fatigue to cognitive difficulties and chronic illness - and insiders have told how he initially thought the exhaustion and pain he had been experiencing were part of getting older and the demands of his two-year Forget Tomorrow world tour.
