No, I have not checked with medical professionals about this. These particular symptoms started slowly after I started praying regularly. The symptoms are the same and seem to occur at random times - I have not noticed a 'trigger' or a specific time when they are worse. For instance, today, I was fine in the morning and able to get through a significant amount of work and salah but when I stood for Zuhr I started to experience difficulties. I pushed through it (barely) and did my duas and zikr afterwards but was feeling worse and as I went to get on with work, I was overwhelmed by a need to sleep. 15 minutes later, I woke and was still in that mood but not quite as tired. Later, as I was praying Asr, for the first time ever, I felt fear of something behind me but I pushed myself to concentrate and continued my salah by reciting audibly. By the time I finished my duas and zikr, I was feeling like normal again. These are very bizarre for me. As for dreams, I would rather not comment on those.