Hello, You are suffering from severe headache and grey spots in the vision and pain in the left arm. You have history of headache and migraines after your accident in 1974. Presently, you have hypothyroidism and headache and migraine regularly. The appearance of a black or dark gray spot in the center of your vision maybe indicative of serious problem that may lead to blindness. It can be age-related macular degeneration (AMD) is an eye disease that shows up as a dark gray spots in the vision. You are suggested to get clinically examined by an Eye specialist. Risk factors for AMD are age, smoking, over-exposure to sunlight (UVA rays), family history, race and gender, obesity, heredity, high blood pressure and having light-colored eyes, etc. If AMD is detected, you will be treated accordingly with laser surgery, photodynamic therapy or injections. Your treating doctor may recommend photodynamic therapy. Zinc, vitamin C, vitamin E, vitamin A (beta carotene) and copper may help to treat AMD. As hypothyroidism increases in severity, it may result in even more frequent headaches or migraine. You are suggested to get T3, T4, TSH test done. You will be accordingly treated. Get clinically examined, get cervical and spinal X-ray, if required MRI done to stay on the safer side. For relief from pain take Combiflam or naproxen, one SOS when needed. Do not skip meals, avoid fried food, processed food, trans fat, full fat dairy products, etc. Stay away from strong smell and avoid exposure to bright sunlight. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Nupur K., General & Family Physician