why does it feel good to scratch an itch?
343101
Because it connects us with the animal part of our brain in a very primitive and satisfying way.
989561
The underlying skin is grafting back together. As it does, it pulls together, much like a stitch pulls two pieces of skin together. This pulling causes the itching sensation you feel.
1185337
A dog likes to scratch, we know that. \n\nWhen they feel their stomach being scratched (and they're not scratching it) the moving leg is a residual/ghost response..........like they would be doing if they WERE scratching themselves.\n\nWhen someone tickles us or scratches our backs for us we usually have the urge to "help them out"......but it's more like a "leaning into it"  or a retreat response.
4184
It's part of the healing process. Itching is a result of the nerve endings around the scar being stimulated. At first, the stimulation is part of the healing. Itching may last months or years afterwards, though, as the scar tissue stretches and again stimulates the surrounding nerve endings.
1085789
Man, it sounds like you got a "bit*h  of a itch".
866279
The neck does it for me- gentley rubbing the back of my neck makes me feel special
779940
Simply put? It feels great, really. To know someone cares about you and you care for them the same way is just a great feeling.
86527
No one really knows exactly why people itch in general, actually.  Some people believe itching is a sensation caused by the aggravation of terminal nerve endings, and a response somewhere between no pain and pain.  This is related to chicken pox because most scientists believe that the Varicella-Zoster virus eventually makes its way into the nerves in the skin.  Since the body is trying to fight the virus, chemicals and fluids are sent to the site of infection that cause intense itching (pruritus).  This would explain why it itches even more when the blisters (or vesicles) break, releasing fluid from the blister.  It's in these blisters that chemicals called histamines may be released onto the skin, causing you to feel itchy.
341987
an itch is somewhere in your body that you want to scratch really very much. Itching can be caused due to allergy to certain types of foods, medicine, moquitoes, sunlight or warm weather in general.
596743
That it rhymes with "chigger". Chiggers make you itch, so sometimes I scratch myself when I hear it.
93913
Itch is produced due to the presence of certain noxious chemicals at the site of itch like histamine e.g. released in allergic conditions like hay fever, or substances produced by local pathogens like cutaneous bacteria that may flourish if a person has little habbit of bathing. These chemicals inturn stimulate nerve endings at specific receptors which take the itch sensation to spinal cord. When we scratch then itching stops because of following mechanisms: 1) either the noxious chemical or agent is removed or 2) the sensory receptor gets exhausted and stops generating impulses because of sudden strain of stimuli during the process of scratching 3) scratching stimulates pain nerve endings which results into supression of further sensations from that area due to reflex inhibition of the neuron. \n\nWhat you have asked can has two mechanisms, i will try to make them clear,\n\n(I). A single neuron does not end by supplying a sigle receptor rather it has many nerve endings which take sensations over a large area and different neurons are interconected with each other, this means that if one neuron at a particular site is stimulated say by those chemicals, sensations wil also be reffered to the areas of other neurons to which that particular neuron is interconnected (this is also the mechanism for "reffered pain") but normally body will preferably perceive that site from which impulses have highest frequency and intensity i.e. the original site of itch, and body will ignore other sites from which weak impulses are coming. When you will itch on that original site, the impulses from that site will vanish suddenly but from the weak sties will continue. In this way will feel as if the same sensation has shifted from original site to another site.\n\n(II). Another mechanism may be that sometimes when you scratch the itching area this cause hault of impulse generation by the receptor at that site but also stimulates other neurons to which the original neuron is interconnected and this results into shifting of same sensation to the skin area of the other neuron.\n\nAlso please keep in mind that certain dermatological conditioins in there mider form like mild allergy, hay fever, urticaria, hives, dermatitis, etc can cause itching because the receptors become sensative due to the presence of histamine and other madiators of allergy, I will recommend if it is a long term problem consult a skin specialist.
927765
Yes, itching is a side effect. Kinda cute, people think you have some sort of tick.
748775
The cause of an itch is because of dead skin cells. Itching promotes sheading those skin cells and prepares for new ones.
630744
Because you touch yourself.
11474
The itch you feel is a reaction to the mosquitioes' saliva and your skin. I don't think I have ever heard of anyone that is immune to it. Also, you getting bitten has alot to do with your body temp, and odor. If you have a sweet smelling perfume on or emit a sweet odor, you attract mosquitoes and those wearing no scents and bug spray of course, are more likely to not get bitten.
1156617
scratch until no more itching.
962889
It is easy.When you bump or bang or even have an itch,the nerve automatically sends a signal to your brain.When the brain receives the message,the message sent will cause you to itch or rub the area that is affected.\n\nSame as with yawns.When the brain lacks oxygen,it causes you to automatically yawn.