Is there any particular area of the body where the skin is numb?
Are you on any kind of medications?
How old are you? Male or female?
Any significant past medical or surgical history?
A vitamin B 12 blood level estimation would be prudent with your symptoms of numbness all over the body. A deficiency of B12 may be responsible for the feeling of this numbness (termed peripheral neuropathy).
Please feel free for your follow up questions.
Yes, the deficiency can manifest suddenly. The treatment is by oral supplements. If the blood levels are too low, B 12 shots may be given. If you take the tylenol PM regularly, liver function test s too would be prudent as this can affect them and metabolism of the vitamins.
It is pleasure and privilege assisting you.