Today My Husband Came Home After Being Out For Approx.

Today my husband came home after being out for approx. 2 hrs. And was sick to his stomach, and extremely dizzy, very pale, sweating and throwing up. Can you give me an idea of what it could be? Even now , some 6 hrs. Later he is still having a hard time walking, hes still very dizzy almost like a drunk person would walk...