What happens to your skin (biologically) when it itches?
494567
Local dilatation (dilatation of blood vessels).
468039
reaction of your sympathic system :D\nhormones are funny things, huh?
881011
90% of the time, itchy skin is merely a sensitivity to something in your environment--it's the other 10% that you'll need to be concerned about.  Itchy skin can be a symptom of certain cancers, such as Hodgkin's Disease Lymphoma.  I ask you, are there other symptoms such as unexplained weight loss, night sweats (drenching amounts of sweat that only occur while sleeping), or fatigue?  Even if there isn't, I'd still recommend seeing a doctor, who can use some simple blood tests to determine whether it's worth further examining.\n\nYou may also be experiencing allergies to something such as detergents (I doubt this one, or you'd be itching everywhere clothing touches you), dust, soaps, shaving creams or gels, or even certain foods.  Think back to when this all started, and see if you can remember any changes you made out of the ordinary.  You may also try changing your razor if you shave your legs; sometimes the blades of mass-produced razor heads aren't in exact allignment, and the tiny little scrapes that they produce--even if you didn't feel them when they happened--can become irritated and make your skin itch.  In fact, the little bumpy rashes you described fit nicely with this possibly being the problem.\n\nFor relief in the meantime, you can try taking Benadryl tablets along with using Hydrocortisone creams.  You're right to be aware of how much you're scratching, since it's easy to make a bad situation even worse by creating little open wounds with your fingernails.\n\nWhatever you do, please go to a doctor first and work this issue from worse-case scenero first before switching over this and that, these and those.  \n\nGood luck to you!
888859
look at this ewbsite, they explain how each constituent works, improving blood supply may be the reason but there is no scientific data suggestiong itching from improved blood supply to the skin, if itching persists or worsens, see a doctor, good luck
1127576
You should poo in your pants whenever it itches.  The poo will help!
84105
When a part of your body is itchy, it is because the nerves on that part of your body are sending some sort of signal to your brain.  Your brain then processes that signal as itchiness.  If your brain is receiving no signals at all from a part of your body, it sometimes just makes something up.\n\nSince the brain doesn't feel pain, some types of brain surgery can be done with awake patients.  An interesting thing to think about is that when a brain surgeon pokes random parts of a patients brain, the patient will "feel" sensations at corresponding parts of their body.
808554
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.  As with pain, a histamine-induced itch travels via the spinothalamic tract, but in fibres specific for itch.
650844
Jock Itch. Get tough actin Tinactin.
22645
The reason for the sensation of itching is not well understood. While itching is the most noticeable symptom in many skin diseases, but it doesn't necessary mean that a person who feels itchy has a disease.\n\nStress and emotional upset can make itching worse, no matter what the underlying cause. If emotional problems are the primary reason for the itch, the condition is known as psychogenic itching. Some people become convinced that their itch is caused by a parasite; this conviction is often linked to burning sensations in the tongue, and may be caused by a major psychiatric disorder.
610830
the reason our skin itch sometimes is due to the effect of our own body immune system against antigen (foreign body not recognize by our immune system). \nWhen antigen enters our body through skin, it is detected by Langerhans cells beneath our skin and triggers our immune system to release histamine to eradicate the antigen, and the histamine secretion is the reason why our skin feel itch sometime.
88137
perhap u were sweaty and itchy, find somebplace cool. ask doctor for some cream to reduce the itchy.
1011917
The itchiness is not caused directly by the mosquito's bite or the chemicals in the mosquito spit but by the body's immune response to them. Your immune system releases histamine, a protein involved in many allergic reactions, in order to fight off a foreign substance. The histamine causes swelling around the puncture wound as blood rushes to the affected area, and as a side effect makes you itch. \n\nWho knew?\nI prefer to squish them before they get a chance to bite me!
243909
most of it is dead skin cells tht have detatched from ur body and are floating around till they settle down somewhere
852740
it will for a while. mine did I dod not want to where it for the longest time, but you have to. when it itches just try to adhust it or ignore it.
1118828
Probably when a woman's private itches inside or out. The drug or lotion or what have you irritated it.
646481
Itching (pruritis) is not a symptom of anemia.  You may have simple dry skin.
36018
This is what I found on the site listed below:\n\n"Pets become infested with a different kind of scabies mite. If your pet is infested with scabies, (also called mange) and they have close contact with you, the mite can get under your skin and cause itching and skin irritation. However, the mite dies in a couple of days and does not reproduce. The mites may cause you to itch for several days, but you do not need to be treated with special medication to kill the mites. Until your pet is successfully treated, mites can continue to burrow into your skin and cause you to have symptoms."\n\nSo the answer to your question is yes they can have scabies, but a different type.