Last few days i have noticed that i get a cold wet feeling when i lean back onto something. i check and my back is dry and warm. doesn't matter what it is i lean back on. i also feel hot in the head and face. no fever. no other symptoms.

Sensations: These sensations could be a manifestation of release of chemicals at the skin level related to a type of a reaction causing vasodilation. This would be akin to blushing. Such reactions may be a response to temperature changes, certain foods or spices or chemicals. The cause may be quite elusive,however. In the meantime observe for skin changes and any evidence of the above causes.