I had my thyroid removed 2 months ago. I have had aching through out my left shoulder/chest and arm along with sharp pains in my fingers and hand on the same side. After working out I almost seem to need sugar to maintain a clear head and I get short of breathe almost as if going into a panic/anxiety attack is about to happen. Sitting still and breathing to calm me help but it happens everytime I work out now. Also the veins in my chest and right arm/shoulder a bright blue.
Hi there. You could be experiencing Brachial plexus nerve irritation, compression or nerve pinching. This could be due to the surgical complications and some swelling in the region which can cause these symptoms. I advise you to consult your Surgeon to rule out Thoracic outlet syn Chat Doctor.  Apply warm compress or hot water bottle to the painful regions. Take painkiller and muscle relaxant like Diclofenac with Thiocolchicoside which will help with the pain and muscle spasm. Also, Tablet Pregabalin 75 mg with Methylcobalamine will be useful to relieve you of the radiating pain.