2006-08-31 10:27:36 · 11 answers · asked by Anonymous in Health ➔ Diseases & Conditions ➔ Skin Conditions
The central chemical involved in itching is histamine, a molecule released by mast cells in the skin. Histamine is the chemical that causes the itch and reddening when bitten by insects. It binds to local nerve endings on specific receptors.
An itch from cutaneous (skin-related) stimuli, such as movement of small hairs on the body, is transmitted along the same pathway as pain. An itch caused by histamine is transmitted to the brain by a different neural pathway, described in 2001 by Andrew et al. As with pain, a histamine-induced itch travels via the spinothalamic tract, but in fibres specific for itch.
2006-08-31 10:32:52 · answer #1 · answered by charlotte66621442000 3 · 0⤊ 0⤋
An itch can be several things:
1) to have or feel a peculiar tingling or uneasy irritation of the skin that causes a desire to scratch the part affected.
2) an uneasy or restless desire or longing: an itch for excitement.
3) a contagious disease caused by the itch mite, which burrows into the skin.
2006-08-31 10:38:11 · answer #2 · answered by Sue 5 · 0⤊ 0⤋
An itch (Latin: pruritus) is a sensation felt on an area of skin that causes a person or animal to desire to scratch that area. It is a distressing symptom that can cause discomfort. Scratching may cause breaks in the skin that may result in infection. Itching can be related to anything from dry skin to undiagnosed cancer.
Please see the webpages for more details on Itching, Poison ivy itchiness, Eye burning-itching & discharge, Vaginal itching and Jock itch (Itching in the groin)
2006-08-31 16:57:04 · answer #3 · answered by gangadharan nair 7 · 0⤊ 0⤋
the feeling that you ned to sratch or it can mean a feeling like to get away the 7 year itch means tired of the same ole same ole
thing no really what do you think it is ? A lame question everyone gets an itch so where have you been????????
2006-08-31 13:58:25 · answer #4 · answered by .................................... 4 · 0⤊ 0⤋
An itch is the opposite end of the scale to excruciating pain.
2006-08-31 10:34:49 · answer #5 · answered by Dick s 5 · 0⤊ 0⤋
a sensation sent from the dermal skin cells to the brain signaling irritation.
2006-08-31 10:32:52 · answer #6 · answered by tbo 3 · 0⤊ 0⤋
i have no idea but i got told off a sience teacher that it was dead skis tickling you when its about to fall off! not sure if its true tho!
2006-09-03 07:35:10 · answer #7 · answered by susie 2 · 0⤊ 0⤋
A man that won't go away
2006-08-31 10:34:38 · answer #8 · answered by Anonymous · 2⤊ 0⤋
a pain in the *ss
2006-08-31 10:37:53 · answer #9 · answered by livinia 4 · 0⤊ 0⤋
b1tch
stitch
twitch
take your pick
2006-08-31 10:33:14 · answer #10 · answered by Amazing Magenta 5 · 0⤊ 0⤋