The raised patches that appear on your skin occur when histamine and other chemicals cause
small blood vessels in the skin to leak blood plasma (a watery, straw - colored fluid).
Compared to the free - ranging mice, the calorie - restricted mice also had three times as
many blood vessels in their skin, to bring more warm blood to the surface, and their skin cells exhibited differences in metabolism so that they lost less energy as heat over time.
They exposed uninfected human cells derived
from blood vessels in the skin to DENV NS1 and found evidence suggesting that the cells did not produce inflammatory cytokines in response.
The dilation
of blood vessels in the skin of your feet and hands when heat from the rest of your body goes to your hands and feet cools down the body and helps with the onset of sleep.
When trying to compensate for extreme heat, the body dilates
the blood vessels in the skin in an attempt to cool the blood.
Known to be linked to pain sensitivity and currently used in the development of painkillers, this is the first time the TRPA1 gene has been implicated in the response of
blood vessels in the skin to cold.
«It's believed that
the blood vessels in the skin are more reactive then,» says Dr. Ostad.