According to updates on Zakk Wylde's Twitter page, the guitarist has been forced to cancel the remaining dates of his Pedal to the Metal tour after being hospitalized for blood clots in both lungs and one leg.
Zakk was taken to a hospital after a concert in Montana on August 19, and then admitted to a hospital on August 25 in Eugene, Oregon, after which he posted this update on Twitter:
"To all our Black Label Family Worldwide, thanks for all the Get Wells. Every 48 hours in the ER to check my blood, had a CT scan today and have blood clots in each of my lungs as well as my leg. Can't sing because pushing can cause an embollism."
Guitar World wishes Zakk a speedy recovery.