Thanks for the query,
Your description matches with shingles
However the only thing against it is the widespread area.
Shingles is usually confined to one area.
Also take an antihistamine tablet.
This will give you some relief.
Please meet a dermatologist
for exact diagnosis.
Let me know if you have any other doubt.
you can ask a direct question to me on this forum, following the below link.
Wishing you a good health.