why does it itch on swelling? (like the swelling after mosquito bite)?
348739
Swelling is caused by increased blood flow to the affected area.  The redness and itching is caused by certain cells in the area releasing "histamine" proteins to eliminate the foreign substance in your body.  \n\nA side effect of these histamines is slight damage to the surrounding tissue, which we feel as an itch -- the itch response is related to the pain response, in that it comes from stimulation of the same sensory structures.\n\nThis is a kind of allergic reaction that affects some people more than others.  It's true the mosquito does inject an anti-coagulant into your body so that your blood won't clot as it's feeding, and your body reacts to this by releasing histamines.  But I figured you wanted to know how itching worked, fundamentally.
974908
First not enough blood is injested by the mosquito.\n\nSecondly,a mosquitos bite is actually two fold. \nThe first bite from one orifice injects a chemical/enzyme to stop the blood from clotting. This chemical is said to help neutralize the disease, this is what makes us itch from the bite. \nThen thru a different orifice the mosquito sucks a very, very small amount of blood and this blood is broken down inside the mosquito's body for food. The enymes of the mosquito make it impossible foir the HIV to live inside the mosquito.
166893
Your question doesn't belong in "Homework Help", unless you're looking for help with spelling (iTchy, not ichy).\n\nSee a doctor, especially if you see things crawling down there.
1151971
its a viral fever caused by mosquito bite.\ncheck this link http://www.westnilefever.com/
768994
when a bug bites you it injects a bit of its saliva and sometimes poison into your skin which causes itchyness so when you scratch any itch it feels better but try not to, it will keep the wound from healing because itching also means its healing and if you keep any wound open it is vulnerable to bacterias and infection.
437224
Well first off thats normal. You will sometimes get a itch or a pulsate in your legs after walking long or running. You have to do your best to not scratch it. The itch will fade
343420
I am a Paramedic and see this all of the time.  As long as there is no Uticaria (Rash) or difficulties breathing which normally show up within several minutes to several hours after being stung. There should not be any alarm.  As others have suggested Ice is and an OTC (over the counter) Benydryl should help.  Be very watchful to make sure the swelling does not spread.  It is never a bad idea to contact your child's Doctor with any questions you may have.  He/She knows your child best medically and is more qualified to make definitive medical decisions.  I hope this helps.
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.
882917
You could be getting an infection from a bug bite or scratch- if the redness or swelling starts to travel up your leg go to the ER.  If not, you can probably wait until tomorrow- then call your doctor in the morning- tell his nurse what is going on and go from there.  He may just call in an antibiotic cream to the pharmacy for you to pick up or he may want to see you.\n\nI did not read your question right when I answered a minute ago-- if you cannot move your ankle and it is red, warm and swollen, you need to go to the urgent care or er now- you may have a septic joint... better to get it checked out- sorry.\n\nIf the redness and swelling is around the bite only- that is normal- it is just the body's natural reaction... put some triple antibiotic ointment on it- thanks for clarifying.
997516
Because when they bit you they inject a fluid that helps thin the blood so that as they are suck your blood wont clot. and your body tries to fight the "venom" and that is what makes it itch
942370
It's were you discharge from your private area. And you ITCH real bad. You can become raw and swollen. If this happens I recommend that you use a ICE PACK and Pain pills. Also call the doctor and he may call you in a perscription that can get rid of it within a couple days. You may even notice a difference in a couple hours of the medication in your system. I also would recommend a anti itch cream the area. I hope this helps
353921
The short answer: HISTAMINE.\n\nThe long explanation in the simplest terms I can explain it in: \nWhether as a reaction to the enzymes from the bug's saliva, or from the damaged done from the act of biting, your body sends in the cavalry - mast cells - to the rescue. Mast cells are an important part of the immune system, and whenever there is damage in your body (injury such as a wound, insect bite, etc., or inflammation) OR an invader (allergen, virus, bacteria), the immune system sends mast cells, basophils, and other immune cells to the site of the problem. Mast cells contain several different chemicals, including histamine, which they release through a process called degranulation. Histamine is actually what is causing the itch of the bug bite. It's the same chemical which causes hives and other symptoms of allergy. It's also the reason why a wound often itches as it heals.
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.
992573
Other insect bite, insect sting, ingrown hair, other unknown puncture or abrasion.\n\nIt could be a lot of different things. If it's "like" a spider bite, it could be a spider bite. There doesn't have to be two fang marks. The bite could be very tiny with a large welt as a result of the reaction to the bite.
990231
Summertime may be everyone’s favourite time of year, but mosquito bites can cause a great deal of irritation. Below you will find a list of ways to treat mosquito bites. \n\nCalamine lotion, otherwise known as the pink stuff, still works. \n\nIf you think it, it will disappear! It might sound crazy and those around you might think you’ve lost it, but this really works for some people. Just close your eyes and say “I feel no pain” or “I do not itch”. \n\nTry tea tree oil. You can find this almost anywhere thanks in large part to the internet, but you can also find some at a health food store. \n\nRub raw garlic over the bites. \n\nMake a paste of water and baking soda and put a dab of paste on your bites. Other pastes that you can make consist of: salt and water or salt and butter. \n\nApply cold compresses. Whether you use a face cloth, a towel, or you fill a ziplock bag with ice, make sure it’s cold. \n\nAloe vera, whether in gel form or straight from the plant itself, works magic with mosquito bites. Simply apply it to the bite and forget about it. \n\nToothpaste or hemorrhoid cream works on the bites as well. \nThe more you scratch a bite, the worse it is. The scratching can also lead to scarring and infection of the bite. If the bite gets infected, contact your doctor for proper treatment.
1094840
Have you tried Skin So Soft  (spray oil mist / reg scent) by Avon? I do not like the regular bug sprays that are available to spray on the skin. I also take Garlic tablets, and I have found that by cutting the sugar out of my diet has helped for me as well. However everyones body is different. When bitten, if I do, I use what is called 'After Bite' roll on sticks. If you don't have this in your area, Hydrogen Peroxide or Calamine Lotion maybe, however I am sure you have tried this. Just remember that when itching a mosquito bite, it spreads the poison.\n\nCitronella candles I light when outside. I also have tiki torches that have the citronella fuel. I got rid of my water fountains, ponds, and any standing water that is in my yard. For the pool however, I do have the automatic cover, and treat it regularly.\n\nI don't know what kind of conditions that surround your property line or your neighbors for that matter. You might want to ask them as well, as what they do to prevent mosquitoes. I know this has helped reduce the mosquitoes within mine. Hope this helps a little.
546010
well, you're definitely allergic to whatever this ant bit you with.  what you've described is a very typical allergic reaction.  it could have had some strange chemical in its mouth, or it was a different kind of ant than the others that bit you.  \n\nif benedryl isn't working for you, i don't know what else to suggest.  you'd have to see your doctor for any beefier antihistamines.  and since this is just a swollen wrist from an ant bite, it's not so big a deal.  the swelling should go down over the next few days.  if you still are swollen next week, then it's time to see the doctor, but for now, try not to worry about it.  maybe try benedryl again with a little bit of ice.  and take some ibuprofen.  they might help too.  you can take as many as 800 mg (which is usually 4 pills) and be just fine.