Musician Justin Timberlake shared that he’s been struggling with the “relentlessly debilitating” Lyme disease during his recently wrapped 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.

Many celebrities, including Justin Timberlake, allegedly contracted Lyme disease; here's the symptoms and best ways to treat it.