Why Do Scabs Itch?

Answer

The body reacts to injuries by producing histamine, which is contained in the scab formation as part of the healing process. Histamines can irritate the skin and cause the scab to itch. Scabs itch when they start pulling away from the new layer of skin underneath them.
Q&A Related to "Why Do Scabs Itch?"
Scabs contain histamine as part of the healing process. These histamines irritate the skin and cause itching. The upper layer of the skin contains tiny nerves that are highly sensitive
http://www.ehow.com/facts_5840880_scab-itch_.html?...
I think its not the scab that causes the itching. The activities underneath the scab which undergoes repair and healing process release certain substances or chemicals that excite
http://answers.yahoo.com/question/index?qid=200609...
An itch is caused when histamine is released from mast cells & sends a signal up the same nerves as pain receptors do telling your brain you are itching
http://www.kgbanswers.co.uk/why-do-scabs-itch/4951...
The itching is caused by the hardness of the scab pulling against the softness of
http://www.chacha.com/question/why-do-scabs-itch-w...
1 Additional Answer
Because the injury that caused the scab is starting to heal and this is indicated by the itching. Try some topical anti-itch creams to help the itch.
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