Pop icon Justin Timberlake revealed he has Lyme disease, joining a growing list of celebrities who have gone public with their diagnoses.

The singer-songwriter and actor shared the diagnosis in a social media post at the conclusion of his Forget Tomorrow World Tour.

When Justin Timberlake revealed that he’s been battling Lyme disease on Instagram, it lit up the internet. Some people sent well-wishes, others asked questions about the illness, and a few—of course—propagated bucket loads of misinformation.