Was there a distinct event that happened when you noticed the symptoms increasing? For example after beginning a new job, ending a relationship, getting mercury fillings in, taking antibiotics etc. Have you begun associating with new or different groups of people, have you moved into a new location? Think really hard about this one.
Now it sounds to me primarily like a non-physical energetic issue, meaning that something of a karmic or manipulative nature came over your energy field and has greatly affected your energy system. However there may be physical ailments undermining your ability to connect with your central nervous system. If you have systemic candidiasis you could effectively be hung over all the time from the mycotoxin poisoning. If you have had mercury exposure or recently taken a supplement that mobilised mercury and redistributed it in your spinal cord or brain you could have issues with your nervous system.
Likely it is a combination of both physical and nonphysical circumstances.