Hi Lindsey,
Diamox is used for high intracranial pressure — which is often found in POTS patients (though not always!). If you have symptoms of high intracranial pressure, it may be helpful for you. When discussing it with your doctor, it may be best to approach it from your symptoms — does that make sense? If you have no symptoms of high intracranial pressure, it may not even be something that pertains to you.