Justin Timberlake 'pushed through for months before finally getting answers' with his Lyme disease diagnosis, and his wife, Jessica Biel, has been 'incredibly supportive' through it all, a family source tells PEOPLE.

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

Lyme disease, caused by the bacterium Borrelia burgdorferi and transmitted by tick bites, can cause anything from mild symptoms such as fever or erythema migrans to serious complic