Hello.. My dad has been suffering from dizzy spells and light headedness for a few weeks now. He was rushed to hospital from work in an ambulance after fainting and not being able to get back up. He had X-rays, an ECG, water and blood tests. He has been back to the doctors since for glucose , more blood and water tests but still unsure what the cause is! He takes diclofenac and has done for years for his spondylitis and someone mentioned that could be causing him feeling the way he is. Can you help please