3 doctors weighed in:

What bug bites cause itching welts?

3 doctors weighed in
Dr. Justin Greiwe
Internal Medicine - Allergy & Immunology
2 doctors agree

In brief: Lots of bugs

Most insect bites cause local inflammatory reactions like itching and welts that are mild and resolve within a few hours without complications.
Of course bee stings and cause more severe local and systemic reactions if you are allergic but any biting bug could cause a localized response. Mosquito bites are common culprits. Ticks, flies, and fleas are also implicated.

In brief: Lots of bugs

Most insect bites cause local inflammatory reactions like itching and welts that are mild and resolve within a few hours without complications.
Of course bee stings and cause more severe local and systemic reactions if you are allergic but any biting bug could cause a localized response. Mosquito bites are common culprits. Ticks, flies, and fleas are also implicated.
Dr. Justin Greiwe
Dr. Justin Greiwe
Thank
Get help from a real doctor now
Dr. Christopher Crosby
Board Certified, Dermatology
14 years in practice
94K people helped
Continue
111,000 doctors available