eye blinking / rolling

My son is taking clonodine for the eye blinking which has limited it at times.  He has allergies no doubt but when we had him checked out he is not allergic to anything.  He has post nasal drip and a crusty mucous in his nose alot.  His skin is very dry.  Do you know if is safe to try the benedryl test.  Do you know if there is any drug interactions that should be avoided there?
We put him on clonodine with the direction of the neurologist. He mentioned Tourette syndrome immediately. He asked us a few questions and said if it continues even if it stops and comes back over and over again in a years time to try the clonodine.  The clonodine makes him tired and gives him the chills at times.  It has reduced the amount of eye rolling but there are times it comes on full strength than it subsides, goes away and then comes back.  It's like a roller coaster ride.
Others that are associated with TS, say that there is no way he has this.  He has no other signs that are associated with it.  I am truly frustrated.  


This discussion is related to 8yr old, periodic outward rolling eyes, excessive blinking and nasal twitching.

[Joan M Pernoud, MD]

It sounds like your neurologist believes your son has a "tic disorder" because of his blinking. The Clonidine is appropriate treatment but since your son may be having some side effects, why don't you check back with your doctor as it may be worthwhile to adjust the medication.