Talk to Gynecologist on Blisters On Skin

(In the Following, I used the word "BLISTERS" for our layman Urdu word "دانے" . I don't know it's the right word or not. I have a skin problem going on since last 2 years. Initially, I and my Parents took as گرمی دانے but it didn't last. Small pointed blisters are formed all over my Body. The Larger ones are Painful۔ Smaller ones are noticed only itching and they get pinched off with nail. They leave a depression. Mostly, these blisters are formed on Face and my chest. Also,they are pus filled. They don't go away. One diminishes, other appears. I sleep and when awake new larger blisters (دانے) apear. I went for treatment to a dermatologist 2 to 3 times. But the result were unaffestive. Suggested me to bath with an expensive soap, once gave me a cream to apply on each blister and that's was irritating for me. Now, I am fed up of these things and heavy fees. Kindly tell me about this issue and what to do? Note: (I don't know this may be related to this issue or not)