It might be worth asking the Immunology Department if they have any comparable experiences - not necessarily shingles.
I agree with
@Rokaab above, but I have only experienced symptoms that are likely to have been caused by Type 1 diabetes, such as urticaria and eczema. My immediate reaction to your post was "Ouch, the poor chap. I've never heard of this in anyone that young. I had chicken pox as a young Type 1 but waited till I was 60 before getting shingles. He has my utmost sympathy. I hope they find a helpful treatment quickly.