Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain the symptoms of sudden occurrence of itching and redness in palms and feet along with feeling of hot flushes and heart palpitations is most commonly due to
Allergic reaction to any of the constituents of food that has caused allergic reaction..
Although you might have taken the same foods previously also but there can be some of the ingredient that has been new or toxic causing allergic reaction..
Nothing to worry, you can take anti allergic medicine like
Cetrizine or Fexofenadine[allegra] for resolving
allergy symptoms..
Apply
calamine lotion to soothe the itchy skin..
In case if there is a repeated episode of same symptoms in future consult an Allergist and get evaluated and he can advise you to get a
blood test done for allergic testing and preventing exposure to the allergen will relieve the symptoms..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.