My Son Is 24. He Has Tingling On The Left

My son is 24. He has tingling on the left side of his face and into his chest. It is causing weakness. It has been going on since September and comes and goes in different parts of his body. He had an MRI this past week on his brain and everything checked out fine. He is going in to see the doctor about blood results concerning his thyroid and liver. He is not feeling well. Should we take him to the doctor or just wait until he meets with him on Wednesday? Could it be stress related? He has
Tourette's syndrome and has weaned himself off his Topamax. He has had that since he was about 9 yrs old.