Itch
Sensation that causes the desire or reflex to scratch
Nº Q199602 ★★★★
Super Rare · Knowledge
Itch
Sensation that causes the desire or reflex to scratch
An itch (also known as pruritus) is a sensation that causes a strong desire or reflex to scratch. Itches have many similarities to pain, and while both are unpleasant sensory experiences, their behavioral response patterns are different. Pain creates a withdrawal reflex, whereas itches lead to a scratch reflex.
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From Wikipedia
An itch (also known as pruritus) is a sensation that causes a strong desire or reflex to scratch. Itches have many similarities to pain, and while both are unpleasant sensory experiences, their behavioral response patterns are different. Pain creates a withdrawal reflex, whereas itches lead to a scratch reflex. Unmyelinated nerve fibers for itches and pain both originate in the skin. Information for them is conveyed centrally in two distinct systems that both use the same nerve bundle and spinothalamic tract.
Text: Wikipédia, CC BY-SA 4.0. · Image: Orrling and Tomer S (CC BY-SA 3.0) ·
