My friend is really sick! (shes in hospital, dr.s wont tell me anything!)?

hypo means low. Glycemia means sugar. Low blood sugar can be from many things: not eating anything, an endocrine system disorder, liver problems, medications, just to mention a few. Diabetes is too much sugar in the blood. It may take a little while for your friend to wake up. The docs will probably want to figure out why she had this problem. They really can not till you anything unless she tells them to. She will probably be ok.