Re: Can it be an infectious disease?
It's unlikely to be an infectious disease given how much time has elapsed since your trip. Also, the problem with your symptoms is that they are all non-specific...in other words, by themselves and together they don't point towards any single diagnosis.
Have you tried ANYTHING that works? Exercise? antidepressants? (NOT saying you're depressed....but sometimes antidepressants can help with the foggy brain and those types of symptoms), stimulants?