Welcome and thanks for posting your query to Healthcare Magic.
As per your query you have hot flashes on foot, irritation, pulsing sensation of heat in foot and you want to know the cause and cure for it.
The first thing is that according to your history it is just 2 days since the problem begun. So at this so early phase it will be injustice to make any proper diagnosis for it.
Generally in your kind of problem it can be due to multiple factors including environmental factors, chemicals or anything coming in contact of your feet.
For the betterment kindly follow the suggestions below:
-Apply over the counter calamine
lotion 3-4 times a day.
-You can do cold/warm water compresses 2-3 times according to weather conditions.
-Do not scratch or rub the skin as it can lead to further aggravation.
-The best measure is to take oral anti histamine
or levocetrizine under medial advise.
Despite above measures if the problem is not getting better then it is better to consult a dermatologist
for best guidance.
Hope these information will help.
"With good health wishes"
Dr Sanjay Kumar Kanodia
MD (Dermatology & STDs)