Why do mosquito bites itch?
Why do mosquito bites form bumps?
The same cascade of immune release results in swelling from edema. The description is a “wheal and flare” which means redness and swelling.
What do dermatologist’s recommend people do for their skin if they have a lot of mosquito bites?
Don’t scratch! This will lead to scabs, sores and possible skin infections like impetigo.
Keep the skin cool. Warm or hot skin will itch more. You can use an ice cube, ice pack or even a cool can of soda to cool the skin. The faster you can chill the bite, the more it will help.
Apply cortisone cream as soon as possible to minimize the wheal and flare reaction. Again, the faster you can get cortisone onto your bite, the better it will work to prevent itching and swelling. Pack it with you when you know you will be in mosquito territory!
You can take oral antihistamines, such as Benadryl (diphenhydramine), but don’t apply it. Topical diphenhydramine is an allergen and can cause an itchy rash. You don’t need your itchy bug bite to evolve into an itchy allergic rash to your itch cream. Many “itch creams” contain diphenhydramine so read labels.