I sometimes have phases where I'm completely wired, after which I'm always shaking and have difficulty breathing.

This only goes away if I take sugar or caffeine or other stimulating substances. It is enough for me to lie down for a short time and close my eyes for only 5 minutes and I drift into a kind of unconscious state in which I perceive a kind of dream even though I am not really sleeping, as if my brain is too active in a certain way. The same problem arises in the general state as a short attention span and erratic mood. Does anyone have any idea what this could be? It sometimes bothers me.