Hello
All the symptoms are an indication of mild degree
heat stroke .
As you mentioned that you were run in a very hot atmosphere .
Due to hot condition there develops
excessive sweating , hence there develops loss of certain minerals which produces,
Dizziness , fatigue, loss of appetite , and generalized
body pain ( a condition simulating fever ) .
When such type of condition happened I inject 5-6 Ringer lactate drips with 2-3 electrolyte M drips with 1-2 normal saline drips within 2-3 days.
Beside this I also advise my patient some appetite stimulant .
Ice massage with oral glucose also helps .
But rest is an important factor .
So in my opinion consult a
primary care physician and get his help or deal as above mentioned.
Good luck.