The individuals most susceptible to heat illness would be young children, elders, and obese people.
im not completely sure but i think its your temperature is over 101 or you are pain free
Advise Mr. Walker to call 911 and be seen in the emergency room. SOA, pressure in the chest and sweating (diaphoresis) are i indicators of heart attack. I would suggest a low dose of baby aspirin too to thin the blood in the event it is a heart attack.