I was diag. with shingles in my mouth, lots of blisters. i am also having a burning sensation on my head, it really hurts. now my shoulders are burnin?

Herpes, not zoster: You may have a different herpes virus, called simplex, not zoster (the one that causes chicken pox). Other viruses besides herpes simplex can be widely disseminated. Allergic reactions are a less likely possibility. See a dermatologist.

Shingles: If you are experiencing shingles it is a very bad deal and can hurt a lot in many areas. Your doctor might be able to prescribe some pain reliever and/or anti viral medication for you but there isn't much that can be done except to wait it out.