Dear
Welcome to HCM
We understand your concerns
I went through your details. You know yourself well. Alzheimers cannot make you forget internal maps all of a sudden. That is a long process. Once that happens, you will not even know.
Let me clarify to you. You were working and you could recall you were stressed. Naturally stress leads to
disorientation. Disorientation is a scary sensation and naturally, because of disorientation, you got scared or got anxious. Naturally because of that the disorientation symptom worsened. You got back your orientation within a minute too. I don't think there is anything to worry with the current episode.
You should be active, indulge in physical exercise and activities, socialize, do brain games and creative hobbies so as to keep
dementia or alzheimers at bay.
I also suggest you to consult your physician for a routine complete check up and investigation, though there is nothing to be worried about.
If you still need my assistance in this regard, please use this link. http://goo.gl/aYW2pR. Please remember to describe the whole problem with full detail.
Hope this answers your query. Please feel free to post follow up queries. Available for further clarifications.
Good luck. Take care.