There are few important reasons for this.
First, localized skin irritation/inflammation as you had rash also in the similar areas.
B-12/Folate deficiency can give you abnormal sensations like this.
Pinched nerve in the spine can also give you similar symptoms (due to disc prolapse or vertebral degeneration).
And finally, one can have symptoms like this in anxiety states (but before attributing this to anxiety, all other potential causes need to be ruled out).
Keep yourself adequately hydrated.
Can use topical capsaicin as well as hydrocortisone ointment over skin to see how you respond to this.
This does not appear something serious for which urgent care is required.
If the symptoms persist, do not improve or get worse, see your doctor discussing all the details i have mentioned to get a management plan chalked out that suits best to your needs.
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