### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
I have been having dizzy spells and issues with my balance for about 6 months. Sometimes the balance gets quite bad, I have never fallen but it is uncomfortable and has caused me much anxiety. I had migraines daily for 40 days, they have since stopped this was in the middle of the spells (so 3 months in). I have lower blood pressure, and have always had this. I had a full cardiac workup a year and a half ago (I was having dizzy spells but not the balance problems). When this started I felt like a wave of dizzy came up from my neck and was centralized in my left quadrant frontal of my head. I saw a neurologist at this point referred to by my GP and he couldn t find anything wrong and thought it was just unexplained sensations. My GP thought maybe seizures. After having the bout of recurring migraines I did have an MRI whicChatDoctore back normal. I am at a loss as I am still having these issues. My GP put me on Zoloft as it created anxiety but also perhaps is caused by anxiety. I don t feel this is anxiety. I also have sensations in my left calf which are either heightened or dulled (numb) in the inner medial portion and sometimes a buzzing sensation in my groin and foot. I am worried that there is something neurologically wrong with me that the MRI missed.

### output:

Hi, Diagnosing balance issues and dizzy spells is difficult. One important thing to rule out is cardiac reasons. Another important aspect is central nervous system reasons. It is great that you already tested for both that and the results came back normal.  From your description. I think this could be a case of polyneuropathy. The peripheral nerves sending feedback about balance are the first to be affected with chronic medical conditions such as diabetes, or it B12 deficiencies.  If I were your treating physician after detailed history and physical examination I would ask for blood tests including it. B12 levels, HbA1C, fasting glucose.  I would refer you to do a caloric ear test also, which provide an idea of the function of the balance center in the ear. I would also run a Doppler test for your carotids (Arteries in the neck the supply the brain). Based on results a therapeutic plan could be constructed.  Hope I have answered your query. Let me know if I can assist you further. Take care 