In 1986, I was parking my car in a pay and display car park and whilst putting the money in the machine...it fell from my hand...I developed a severe headache which lasted for about 15 seconds only. I thought to myself that I should consult my GP when I arrived home. I then proceeded to jog the half mile to the Antique Fair and arrived inside the door before feeling the same bad feelings again and losing partial feeling in my right side....this time it didn't go away. I tried to ask the way to the hospital but my words were muddled and people did not understand...they thought I was drunk!!!!! I went into a shop where the male assistant sat and I kept (in my head) saying 'Hospital' to him...which he eventually understood...ushered me from his shop and directed me the quarter of a mile to the hospital.
In general no-one understood what was happening to me with muddled words and unsteady on my feet........IF YOU see someone like that ...at least smell their breath to establish whether alcohol has been consumed. I would personally take a lot of care in helping someone...even if I felt they were drunk...it costs me nothing and might save a life or ongoing problems.