Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern..
As per your complain it seems that you have
allergic reaction to some unknown allergen and itchiness of skin and blisters filled with pus seems to be due to to it..
As you took Cortancyl 5 mg that contains a
steroid Prednisolone it has led to suppressing of the symptoms and in case if you have got re-exposed to the allergen there is recurrence of allergy symptoms..
I would suggest you to consult an Allergist and get evaluated and a thorough clinical evaluation and allergic testing can help in confirmation of cause and treatment can be planned accordingly..
As of now you can take anti allergics like
Benadryl or Levocetrizine..
Do cool compresses over the itchy bumps..
You can also apply
Calamine lotion for soothing the skin..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora..