Your welcome with your post.
You will definitely need to do a check up. Prednisone
has as one of its serious side effects to be high blood pressure
whereby you will be having head aches, dizziness
, blurred vision
etc. Also isolated head ache with no elevated BP is also one of the side effects. If your cough is better now, I will suggest that you stop taking hydrocodone
or if still coughing you may continue with your doctor's advice. I suppose that you probably must have completed the doses of z-pak already as it usually 3 days treatment.
I suggest you see your doctor now to control your blood pressure and reevaluate you for the neck and headaches.
Hope this helps