My skin has recently turned out to be very sensitive. I suffer from this hives infection whenever I sweat or whenever I m in heat.recently I have noticed that a portion of the skin on my lips has turned out a little darker as if it is burned and I had no sensation there.after few months it has reduced.but now even if a hair strand touches my lips it starts itching and then the part gets a little swollen as if I have got hives infection there.I don't use any oil on my lips coz even my skin is prone to acne.plz help.