The interesting science lies in what happens after the blockage. The sweat gland does not have a "pressure sensor" to tell it to stop production. It continues to secrete sweat in response to body heat.
Blocked sweat glands occur when the narrow ducts that transport sweat to the skin's surface become obstructed. This traps perspiration beneath the skin, often leading to irritation, bumps, or rashes. Common Causes Several factors can lead to a blockage: blocked sweat gland