i tink i'm having a condition called cold urticaria, which basically means dat i'm allegic to e cold. i'll always get rashes when i'm in china during the winter season. at first i tot it's due to the thermal wear, which deprives my skin from breathing, until i mentioned it to my colleagues & they told me it's cold rash.
i went to goggle abt it & wat happens is when cold air/water/etc touches the skin, the blood vessels in the skin constrict, reducing oxygen in the skin. In reaction to the low oxygen, the body produces a chemical reaction to produce an inflammatory agent into the area. The inflammation reaction causes bumps similiar to goose bumps to occur and a vasodilation of the blood vessels bring more blood and oxygen into the area. The skin looks red and bumpy and may feel warm to the touch.
ya, so after blaming my thermal wear for e past 2yrs, i finally found e truth today! haha... but of course i'll make a visit to e doctor when i'm back in spore to cfm it. apparently there's medicine for this condition...