Pseudoseizures or Dissociation? Need Help Understanding My Symptoms

Hi, so bit of a long question. I was diagnosed by the GP with pseudoseizures, but a councillor told me it was dissociation. Basically i get extremely tired to the point i cant keep my eyes open, my body feels really heavy and i cant communicate verbally. It also comes with this feeling that is really hard to describe, almost like a pulse/wave through me or intense pins or needles? Its hard to explain sorry, almost like im falling alseep and my body is trying to jolt me awake. Nothing helps except sleeping until it goes away and occassionally ice on my body. I just wonder if anyone else feels like this or knows which one it might be.