It's difficult to say without further evaluation.
What I would do is have a your personal physician, or a referral to a dermatologist, look at it.
There are various sorts of rashes that can affect sensation, and if one is present, appropriate treatment, or even a biopsy, can be considered.
Another consideration would be a blockage in blood flow, which can lead to a cool and clammy feeling. Having you doctor check the pulses in the upper extremity should be considered.
These options can be discussed with your personal physician.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin Pho, M.D.
Thank you sir,
I appreciate your help. The problem went away after about 48 hours,if it happens again i will definitely be in to see my primary.