Blood tests show his blood platelets still being on the low side. His anti-seizure medicine is the likely cause since they recently had to crank it up pretty high. If the count gets too low, there is medication to handle it. He still acts and feels normal otherwise.
In case you were curious, he didn't loose much hair this time. They just shaved a small area about as big as a deck of playing cards. The procedure was done on the same line as his first incision and near the back of his head, so it won't cause any additional scarring.
He likes to sleep propped up because it is more comfortable for his head (less blood pressure in the healing area).