Dad is back in the hospital

My dad was transported back to the hospital via ambulance. He got up from his nap and was complaining of severe numbness in his left arm and leg and he was drooling. Mom thought he had another stroke, but they did a CT when he got to the hospital and they don't think it was a stroke. Possibly it was a bad reaction to some of his medication. He is running a fever, so they are keeping him for observation. Prayers would be much appreciated!