Justin Timberlake fans are feeling downright disappointed in a star they feel they've come to know over his many years in the spotlight.

Justin Timberlake recently concluded his "Forget Tomorrow" world tour, revealing a long-hidden battle with Lyme disease just a day after the tour's final stop in Istanbul on July 30, 2025.

If untreated, Lyme disease can lead to a cascade of complications, including fatigue, severe headaches and neck stiffness, arthritis, rashes and heart palpitations. Patients can also experience dizzy spells, shortness of breath and nerve pain. In rare cases, Lyme can lead to meningitis.