Why is my skin itch when i exercise?

i mean im fine for a little bit but when the asthma kick in and i can't breathe that well i start to itch everywhere.


its not a normal itch it feels like its almost under the skin kind of like prickling, and itching doesn't really help.


it happened last nite for ther first time without exercise i was just getting ready to go to bed and i starting itching like crazy.
Why is my skin itch when i exercise?
Itching is most likely to occur after you walk or run, usually if you have just started to exercise in your lifetime or when you increase your intensity. Blood is being forced so hard through your body that it is able to reach your capillaries which are very small. This causes your capillaries to itch because they have been without blood for a while and they are opening up as the blood is pumped through. If you don't get the blood to the capillaries in your body they will die and turn blue- also called varacose veins. So itching in this case is really really good.