I have memory trouble, but I still usually refer to it as brain fog. It can get really bad sometimes. I once forgot who my son was. He ran into the room, and it startled me because I thought I was home alone, and I didn't know who the child was. It took a few seconds for me to remember that I had a child, and that the little boy who came into the room was mine. It is scary when brain fog and cognitive problems get that bad. It leaves me mostly unable to communicate. My husband will ask me an easy question, and I'll just have to say, "I don't know." Because I really don't remember. I take Cerefolin NAC, and this helps me a lot. I'm still always a little "foggy," and I still have times when it gets bad, but the Cerefolin NAC does significantly improve my memory, ability to concentrate, recall words, and carry on a conversation. The really bad periods of cognitive difficulties I have had are believed to be caused by hypoperfusion. Hypoperfusion in the brain can really mess up one's thinking. Going to bed and raising my feet with pillows helps some. Sometimes I still have hypoperfusion even when lying down, and we just have to wait for this to go away. I have had the really bad periods of brain fog last anywhere from one day to a couple of weeks. I've talked with my doctors about the severity of my brain fog, but they haven't found anything wrong other than dysautonomia. So, all that to say, your memory problems could very well be POTS related. This comes from the POTS Symptoms page: "Cognitive impairment (Grubb et al., 1997) (may include difficulties with concentration, brain fog, memory and/or word recall)." Rachel