Yes, I have.
It's a two stage condition - first you are afraid you might die, then you are afraid you might not!
OK, joking apart - it's a very painful condition, like having lit cigarettes placed all over your skin, while simultaniously taking al your energy, so you lie there and hurt.
It's a variation of the chicken pox virus and it inflames the nerve endings, hence the pain.
It's often caused by stress, and the virus lies dormant in your system and can flair up again.
Your GP will recognise it instantly and sign you off with some lotion and maybe tablets.
Hit the sack and let it run it's course. Hope it's not too painful for you.