India, Aug. 1 -- Justin Timberlake has shared a personal health update after wrapping up his Forget Tomorrow world tour in Turkey on July 30. In an emotional post on Instagram, the 44-year-old revealed he has been diagnosed with Lyme disease. He described the illness as exhausting and painful, both mentally and physically.

Timberlake wrote in his lengthy post, "Among other things, I've been battling some health issues, and was diagnosed with Lyme disease -- which I don't say so you feel bad for me -- but to shed some light on what I've been up against behind the scenes. If you've experienced this disease or know someone who has - then you're aware: living with this can be relentlessly debilitating, both mentally and physically."

His wif...