How can we feel itchy ? What is really going on under our skin ?
89379
You have nerves that extend into the skin and carry messages back to the brain - like that's hot, ouch.  When your nerves get mixed signals, then you itch.\n\nYou have four major minerals in your body: calcium, potassium, sodium and magnesium that need to be in balance.  Magnesium has a function in transmitting nerve impulses - I think of it like having insulation over an electrical wire - like the one to a light bulb.  Without the insulation (or with low magnesium) your nerve impulses jump around the room (or your body) and cause spasming.\n\nTake 500mg to 1000 mg magnesium at night and see if it helps.  It should also help relax you and help you to sleep better.
318778
Itching is low grade pain. Sometimes a change of temperature balances the nerve endings just enough to change the natural signal for awhile.
1018528
Having had scabies myself not long ago I can confidently say that I never felt the mites at all. As you say, its probably your imagination - especially as the medication wears off.\nI found that if I kept my skin as cool as possible, especially in bed, the itching was not too severe. This strategy worked well and included having warm showers rather than hot and sleeping with the lightest possible bedding to remain as cool as possible.\nFor reliable medical information look here:
402491
an itch is a misfire of a nerve ending.(i think).  its along the same lines of why you can feel like you're wiggling your toes after you have your leg amputated.(lol)
712026
When you exercise, your heart pumps faster and your blood vessels dilate as a mechanism for heat loss due to your energy expenditure.  With exercising, you are detoxifying your body of unwanted wastes and toxins through sweating.  One reason you may be itching is because of the release of  these unwanted wastes through the skin.  This should resolve after exercising and having taken a shower. Another more probable reason is that your blood cells release their histamines, and these mediate the itchy sensation you feel.  This should also resolve after exercising. Not everybody has the same reaction to increase physical activity.  Good luck!
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.
238229
Because your body is not use to too but after a while your body will get use to it then the itching will go away and its totally normal...
539995
could be heat, dehydration,  Hard to tell with out seeing them.  If the rashes are itchy could be bug bites or poision Ivy.  When in doubt take em in.
425376
that happens to me as well, but with ice cream, it's a reaction to sugar, the sugar gets into the blood stream, blood get's thicker and thats the itchy sensation..but i dont know how old are you but if i was you, i will be taking less sugar and more water, at least reduce 1/2% of whatever sugar you are eating or drinking
968608
I have cold urticaria. Ive had it since i was about 7 or 8 and i am now 21. basically all i do is when i feel my hives breaking out or my skin behind my ears getting itchy i go into a warm place or put on warmer clothing. if you cant do that make sure you keep moving to try to keep your body warm, if you feel it coming on rub the area and try to warm up. i havent found any medication that i can take that helps. i hope this helps you.
240244
You could have a pinched nerve in your back causing this problem. The itching can be a side effect. Stop itching and use anti-itch cream like lanacane if you have to. The red marks are from you scratching so hard, you can't feel how hard your scratching and are breaking blood vessels under the skin. I recommend you go see a doctor.
313916
There are always several answers.  One answer could be the threshold of your nerves.  Our nerves have a threshold inwhich the stimulus has to cross in order for our nerves to transmit the signal.  When you lay down to sleep, it could be that your mind is not distracted by life and your threshold has been lowered and thus your nerves are detecting any little thing and it feels like itching.\n\nAnother possible explaination could be that you have bed mites and they are biting you.  Not joking
1118828
Probably when a woman's private itches inside or out. The drug or lotion or what have you irritated it.
916598
I suffer from anxiety, according to my doctor.  I usually get irritable, angry, my blood pressure and pulse rate start to rise, and a lot of times, especially if I am driving, I am yelling so loud that I believe most people can hear me, even with the windows closed.  If I am really mad, I get red in the face and I start getting dizzy because I have gotten myself so worked up.  I am now on some medication to control anxiety and some herbs to help combat stress.  \n\nYou may have the beginning symptoms of anxiety, which could be caused by severe stress, like in my case.  I have never been itchy, but different people experience some different reactions.
583700
This is a itchy inflammation of the skin, characterized by dry, scaly, and thickening.  Stress and tension can increase the itching.  Normally treated with corticosteroid creams and maybe anihistimines.  Sometimes your doc may even prescribe a patch with the meds in it so it decreases the scratching
471082
Well, three quesses.\n According to your hypothesis we rub in dirt and bacteria, so maybe nature is doing this on purpose to make us get bateria on us to build up our immune systems. \n Or maybe there are chemicals or enzymes in things that bite us or touch our skin (like being allergic to metal) that cause the itch. \n But I think the most popular answer to this queston would have something to do with the fact that during a months time your skin is completeky recycled meaning, the layer that was on the very bottom at the begining of that month is now the top layer of skin. You itch because dead skin is needing to be scracted off.
529256
Apperently from what I have just read it can be...\n\n"My breasts are starting to grow. They hurt and are very tender. They also itch a lot and I’m getting red stretch marks. How long will this last?\nWhat you are experiencing is very normal... Because the skin is stretching, it may also itch. Usually the pain and itching last less than a year (even though your breasts will continue to grow over five to six years.)"\n\nBut it's not the only reason for itchy breasts or always true:\n"Dear TeenHealthFX,\nHow do I know if my boobs are getting bigger? And is it true that when they get itchy it means that they are growing?\nSigned: Itchy Boobs Are They Growing\n\nDear Itchy Boobs Are They Growing,\nJust like with development of all of the other parts of your body, the development of breasts happens at different times for different people. There are though 5 definite stages of typical breast development that you can read about here for more detailed information.   Generally speaking, by the start of your period, your breasts should be well on their way to developing due to increased hormone levels in your body.  If you are feeling itchiness in your breasts, it is most likely due to dry skin and not the onset of a growth period.  The skin on your breasts is often more delicate than on other parts of your body, so you might want to use a moisturizer to alleviate the problem."