The 47-year old Michaels suffered an acute and painful headache on Thursday night, which lead to a battery of tests including a CAT Scan, MRI and Angiogram.
This latest health problem comes on the heels of his emergency appendectomy on April 12 in San Antonio. Doctors are trying to determine if this is related to that recent surgery or Michaels' lifelong battle with diabetes or some other condition.
Michaels is being treated at an undisclosed hospital.