Psychotic Attack!

What an incident today.Just 10 min before I finished my shift, one man suddenly walked in and asked me, "Dr, I have cough and some mouth ulcers. Can give me medication?"Noticed that he just came without registering himself, I said, "Can, but please register at the counter first?"You won't believe what then happened. He suddenly "mengamuk" (in psychiatric, it means going mad, or you can imagine