Why is my 10 year old scar itchy?

Why is my 10 year old scar itchy? Histamine is one of the major causes of scar itchiness. Upon its release, histamine activates nerve fibers in the skin that signal the brain that there is an itch. Another reason why your scar feels tight and itchy is due to the third phase of the wound healing process: proliferation.

Histamine is one of the major causes of scar itchiness. Upon its release, histamine activates nerve fibers in the skin that signal the brain that there is an itch. Another reason why your scar feels tight and itchy is due to the third phase of the wound healing process: proliferation.